摘要:
A ceramic substrate for a thin film electronic component, a production method thereof, and a thin film electronic component using the ceramic substrate A first substrate (1) includes a dense glass-ceramic mixed layer (33) containing glass in its surface portion. A second substrate is prepared such that a glass layer (32) formed on a surface of a substrate base portion (2) is subjected to a heat-pressure treatment so as to form or rather partly change the glass portion (32) into a dense glass-ceramic mixed layer (33) in which glass is dispersed into a surface portion of the substrate base portion (2). A surface of the dense glass-ceramic mixed layer (33) is then subjected to grinding or rather polishing to flatten and expose a surface of the dense glass-ceramic mixed layer (32). A third substrate includes a substrate base portion (2) having a dense glass-ceramic mixed layer (33) containing glass on a surface portion in one face side, and a wiring pattern (21) formed inside the substrate base portion (2). In the wiring pattern (21), one end thereof is exposed on or from a surface of the dense glass-ceramic mixed layer (33) and the other end is exposed on or from another surface of the substrate.
摘要:
A dielectric composition is based on a BaO—MgO—Nb2O5 system material (BMN system material) having a dielectric constant, &egr;, of about 30, a large Q-value (no-load quality coefficient) and a comparatively small absolute value of the temperature coefficient (&tgr;f) of its resonance frequency but containing no expensive Ta. The dielectric material has a composite perovskite crystal structure as the main crystal phase, wherein a predetermined amount of KNbO3 is added to a BMN system material. The high frequency characteristics can be further improved by partially replacing Nb with Sb and partially replacing the B site of the perovskite crystal structure with Sn.
摘要翻译:电介质组合物基于介电常数ε为约30的BaO-MgO-Nb 2 O 5体系材料(BMN体系材料),大的Q值(空载质量系数)和较小的绝对值 其谐振频率的温度系数(tauf),但不含昂贵的Ta。 电介质材料具有复合钙钛矿晶体结构作为主晶相,其中将预定量的KNbO 3添加到BMN系材料中。 通过用Sb部分地代替Nb并用Sn部分代替钙钛矿晶体结构的B位,可以进一步提高高频特性。
摘要:
A compact vehicle production line. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.
摘要:
A compact vehicle production line is disclosed. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.
摘要:
An intermediate joint is provided which joints two cylindrical members to form a side member used in a vehicle body. The intermediate joint includes a front and a rear connecting portion and an intermediate coupling portion coupling the front and rear connecting portions. The intermediate coupling portion is so formed physically as to have a degree of rigidity greater than those of the front and rear connecting portions. This improves the strength or rigidity of the intermediate joint without increasing the overall weight of the side member.
摘要:
A vehicle body structure provides an increased engine room collapsing stroke to increase energy absorption during a frontal or rear end collision. Force applied to side members is transmitted efficiently to a floor structure by controlled deformation of first, second and third structural portions of a impact redirecting and impact redirecting structure which interconnects the floor and the side members. Occurrence of bending deformation of the inboard end portions of the side members is attenuated to subject the front side member to collapsible compression which increases the engine room collapsible stroke.
摘要:
A vehicle body structure is provided to simplify both positioning and temporary fixing in assembling a dash panel 1 to a reinforcement member 4. The vehicle body structure has engagement parts 21 arranged on both sides of the reinforcement member 4 in a vehicle width direction, for engagement of the member 4 with the dash panel 1. In process of assembling, the dash panel 1 is pinched between the engagement parts 21 through both ends of the panel 1 in the vehicle width direction.
摘要:
A microscope system for observing an image of a sample at desired magnifications includes a first objective lens having an objective side surface which is telecentric, a focusing lens, disposed in an optical path along which optical rays emitted from the first objective lens travel, for focusing the optical rays and forming a sample image and a second objective lens having a magnification factor different from that of the first objective lens. An interchanging member holds the first objective lens and the second objective lens and is used for placing one of the first and second objective lenses in an observational optical path between the sample and the focusing lens. The inequality 0.29
摘要:
There is disclosed a microscope provided with a parallel ray optical system, for forming parallel light rays, between the objective lens and the eyepiece lens. A lens barrel supporting the parallel ray optical system is axially extended or retracted with respect to the objective lens, such as by mutual engagement of a ratchet and a claw member, thereby varying the optical path length of the parallel light rays and thus adjusting the height of the eyepiece lens.
摘要:
A static magnetic refrigerator comprising a magnet generating a high-intensity magnetic field, a magnetic working material disposed in the high-intensity magnetic field, a magnetic shield disposed between the magnet and the magnetic working material, and a rotating means for rotating the magnetic shield, the magnetic shield comprising a pair of nearly parallel flat plates or a pair of outwardly curved plates facing each other and made of a superconductor, and the magnetic working material is accommodated in the inner space form by the pair of the flat or curved plates, whereby a magnetization process wherein the magnetic working material is magnetized in the high-intensity magnetic field by way of rotating the magnetic shield at a position allowing the permeation of the magnetic field through the magnetic working material via the pair of the flat or curved plates and a demagnetization process wherein the magnetic working material is demagnetized by way of further rotating the superconducting magnetic shield at another position permitting the shield of the magnetic field via the pair of the flat or curved plates are repeated by the rotating means so that the magnetic working material generates coldness.