各位：
 
上周发至论坛请各位专业精英审核的IPC-T-50术语可能多了些，效果不佳。
这周我们做出了一些调整：不再将大量术语发至论坛，只选其中一部分发送，上午和下午各发送一次。盼望各位在百忙之中能够伸出你的援助之手，对这些术语进行审核！
下面是今天发送的每一批。
 

谢谢！

 
IPC TG2-30CN 秘书：郝宇
 
 
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。

 

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。

 

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。

 

Margin Width (Drill)                          刃带宽 (钻孔机)    51.0740

The thickness of the cylindrical portion of a drill land that is perpendicular to the leading edge.

钻头刃带的圆柱体正交于钻孔边缘部分的厚度。

 

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)

 

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”）