摘要:
A screwdriver includes a handle, a screwdriver head coupled to the handle, and a conduit reamer coupled to the handle. The conduit reamer includes a first cylindrical portion having a first sidewall with a first diameter, and a second cylindrical portion positioned partially within and extending out of the first cylindrical portion. The second cylindrical portion has a second sidewall with a second diameter. The second diameter is smaller than the first diameter such that a gap is formed between the first and second sidewalls. The conduit reamer also includes a blade having a reaming edge positioned in the gap between the first and second sidewalls.
摘要:
The present invention relates to an engineering design method and a system of implementing same. In one embodiment, the method includes a construction process of knowledge components and a design process based on the knowledge components. The knowledge components pack universal modules in the standard forms. Accordingly, the knowledge components are independent from design layouts or design processes of products, and reusable in different projects and platforms. The design process integrates a variety of software platforms via a uniform environment and calls the knowledge components to complete the engineering designs. Further, the design process defines a data relation and an execution relation of the knowledge components and establishes a relationship between the knowledge components without programming. The universal module comprises at least operations, methods, rules and/or flows of an engineering design process and engineering analysis process.
摘要:
A linear exchange element with functionalized polymer on a core of rope, twine or yarn has well defined physical structure and may function as a spacer or be formed into free-standing exchange elements. A screen is fabricated from such strands or strips, with a pattern of mixed, sequential or other exchange types for enhanced operation in a capture device or in an electrodialysis device. Strands possess tensile strength, enabling deionization devices of new architecture, such as fiber-wound cartridges and other packing arrangements. Bodies made of the strands may operate as walls to perform the function of an exchange membrane or bed, or may operate as spacers positioned between membranes to enhance ion capture and transport, and their properties simplify handling and regeneration. Electroseparation devices advantageously employ the open spacers to better treat food, fermentation product or other streams where high conductivity, suspended solids and fouling would otherwise present problems. “Woven” mats may be arranged so that strands of one type in a first layer possess at least some points of contact with strands of opposite type in an adjacent layer, and different strand diameter and mesh pitch or dimension may be employed for treating fluids of different viscosity or concentration to optimize treatment throughput and removal rate, or to minimize fouling or flow obstruction and otherwise extend the range of treatment parameters.
摘要:
A tape measure includes a housing assembly defining a cavity and a tape port. A measuring tape is selectively extendable and retractable from the tape port. The measuring tape includes a spool portion disposed within the cavity and an end portion. A top surface extends from the end portion to the spool portion, and a bottom surface extends from the end portion to the spool portion opposite the top surface. A hook member is fixedly coupled to a end portion of the measuring tape. A first measurement scale is defined on the top surface and includes indicia having a first orientation relative to a longitudinal tape axis. The bottom surface includes a second measurement scale with indicia having a second orientation relative to the longitudinal tape axis. The second orientation is substantially opposite the first orientation.
摘要:
A tape measure includes a housing assembly having a first side wall, a second side wall, and a peripheral wall extending from the first side wall to the second side wall. A cavity is defined within the housing assembly, and the first side wall defines at least one aperture open to the cavity during use of the tape measure. The peripheral wall defines a tape port. A spool is rotatably supported in the cavity about an axis and includes at least a portion of a measuring tape. A hook member is fixedly coupled to an end portion of the measuring tape. The spool includes a retraction mechanism with an elongated coiled spring.
摘要:
The present invention relates to an engineering design method and a system of implementing same. In one embodiment, the method includes a construction process of knowledge components and a design process based on the knowledge components. The knowledge components pack universal modules in the standard forms. Accordingly, the knowledge components are independent from design layouts or design processes of products, and reusable in different projects and platforms. The design process integrates a variety of software platforms via an uniform environment and calls the knowledge components to complete the engineering designs. Further, the design process defines a data relation and an execution relation of the knowledge components and establishes a relationship between the knowledge components without programming. The universal module comprises at least operations, methods, rules and/or flows of an engineering design process and engineering analysis process.
摘要:
A double-layer cable-strut roof system includes a central structure and an edge structure, a plurality of sets of first diagonal struts and a plurality of sets of second diagonal struts provided between the two structures, each set of first diagonal struts being arranged alternately with one set of second diagonal struts. Or a plurality of sets of diagonal struts are provided between the two structures, each of which including a plurality of first diagonal struts and second diagonal struts joined together node to node, each first diagonal strut being arranged alternately with one second diagonal strut The roof structure may cover the underlying building space in its entirety or, alternatively, may cover a perimeter portion of the building space leaving the center area uncovered, or may be constituted by a plurality of structural units, which is adapted for spanning large areas devised for a wide range of building shapes.
摘要:
The present invention relates to an engineering design method and a system of implementing same. In one embodiment, the method includes a construction process of knowledge components and a design process based on the knowledge components. The knowledge components pack universal modules in the standard forms. Accordingly, the knowledge components are independent from design layouts or design processes of products, and reusable in different projects and platforms. The design process integrates a variety of software platforms via a uniform environment and calls the knowledge components to complete the engineering designs. Further, the design process defines a data relation and an execution relation of the knowledge components and establishes a relationship between the knowledge components without programming. The universal module comprises at least operations, methods, rules and/or flows of an engineering design process and engineering analysis process.
摘要:
A cold cathode discharge device with high efficiency of light emission and long life is prepared by a cold cathode having both high secondary electron emission and anti-spattering property. Using carbon system cold cathodes constituted of a mixed phase of diamond and graphite, a cold cathode discharge device with high efficiency of light emission and long life is realized. It is desirable that an element having a wavelength of light emission equal to or shorter than 200 nanometers should be mixed in the discharge gas.
摘要:
Disclosed are a method, apparatus and system for instant message routing. The method includes: receiving a communication request from a source client to a destination client; acquiring the context associated with the source client and the destination client; and selecting a sub-user of the destination client for communication using a policy according to the context. When a source client requests communication with a virtual user, the method can route the communication request using a policy according to the context, to a sub-user of the virtual user which once communicated with the source client.