摘要:
A displaceable from the opening sectioned door with track supporting post, which is fixed in a position determined by the plane and dividing lines of the opening using a detachable fixing mechanism, at the two sides of the track supporting post and up to the full height of the opening vertical guiding tracks of individually known and widely used width sectioned doors are fixed, allowing the upper end of the track supporting post, whose load bearing capacity corresponds with the size and mechanism of the sectioned door used—in a closed state and the vertical guiding tracks attached to the fixed horizontal guiding tracks with an upper fixing mechanism ensuring precise connection,—permitting sideways sliding, suspended on a roller gear over the horizontal pole guiding track, while its lower end connects to the base via a lower fixing mechanism.
摘要:
A process for reducing the inclusion content of steels and refining their structure which comprises the steps of subjecting molten steel containing inclusions to a pressure of at least 1 atm; removing inclusions from the molten steel by introducing therein at said pressure an inclusion-removing alloy containing calcium or magnesium; and thereafter applying vacuum to the molten steel to evaporate residual calcium or magnesium from the steel.
摘要:
A Deep Level Transient Spectroscopy (DLTS) method in which a high frequency measuring signal is applied continuously on a semiconductor junction, and exciting pulses are generated which are coupled through fast semiconductor switching elements to the junction to alternatively bias the junction in reverse and forward (or slightly reverse) directions. The high frequency measuring signal passed through the junction is evaluated by means of a lock-in amplifier phase-locked with a constant phase angle, independent of the repetition rate of the exciting pulses.The evaluation circuits of the apparatus including the lock-in amplifier are controlled by switching elements driven by control signals generated from the exciting pulses.
摘要:
A process for the underground gasification of coal and carbonaceous materials in makes the customary lengthy preliminary task of establishing an underground interconnection between wells and cavities unnecessary. Instead, according to the invention, the circulation of gasifying agents and product gases is between one or more wells and the boundary of an underground generator (i.e. cavity system) through a reaction zone in the generator.
摘要:
A mechanism for storing an automotive vehicle covering, that includes a reel structure in near adjacency to the vehicle for winding the covering into a compact package. The covering may be pulled off the reel structure and directly onto the vehicle. After placement of the covering on the vehicle the covering is detached from the reel structure. The reel structure can be swung away from the vehicle when necessary to permit use of the space normally occupied by the reel structure.