Library                                               库                    20.0706

A catalog of related items that contains all of the information about the items that is necessary for processing by a computer program.

包含计算机程序处理所必需的所有信息的相关条目目录。

▲包含计算机程序处理所必需的所有条目信息的相关条目目录。





Locating Notch                                  定位槽                   20.0719

A tooling feature in the form of a notch in a printed board.

印制板上用来定位的槽。

▲以印制板上槽的形式进行定位的一种加工特征。



 





Loop Height                                       弯曲高度                76.0725

The magnitude of deviation of a wire from a straight path between its end attachment points.

一根导线与其两个端接点间直线路径的偏离值。



 

Magnification Power                        放大能力                92.0733

The ratio of the tangent of one-half of the angle (beta) subtended by the image of an object (H), as seen through and centered in the field of view of the magnification device, to the tangent of one-half of the angle (alpha) subtended by the object (H) as seen at 10 inches by the unaided eye. (See Figure M-1.)

正对进过或正中于放大器放大范围内物体(H)角度（β）的二分之一正切值比上正对肉眼在10英寸内看到物体（H）角度（α）的二分之一正切值的比率。(见图M-1)



▲放大倍数---观看时,在放大仪视野正中的物象(H)所含角度（β）一半的正切值与正常视力在10英寸处所看到物体（H）所含角度（α）一半的正切值之比。（不知图M-1是怎样的？）



Mass Lamination                               预制内层覆箔板     55.1443

The simultaneous lamination of a number of preetched, multiple-image, C-staged resin panels or sheets that are sandwiched between layers of B-staged resin and copper foil. (See also "Cap Lamination" and "Foil Lamination.")

同时层压夹在B阶树脂和铜箔之间的多块预蚀刻，多个图像、C阶树脂面板或薄板。（参见“帽式压合法”及“铜箔层压法”）



▲     预制内层覆箔板 ---在B阶树脂和铜箔之间同时层压夹有大量预蚀刻的、具有多个拼图的C阶树脂板而形成的覆箔板。







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