机床。带4个键的花键轴和花键孔的剖面。内定心。尺寸。
Machine Tools; Spline Shafts and Spline Bore Profiles with 4 Splines, Internal Centering, Dimensions.
安装后，门上无钥匙孔、密码键、磁卡槽等装置，使窃贼无法下手撬锁潜入。
After installation, no keyhole, no encryption key, no card slot, let thief can't do any thing.
将实现3d互连的方法分为引线键合、倒装芯片、硅通孔、薄膜导线等，并对它们的优缺点进行了分析。
The methods of 3d interconnection can be classified into the wire bonding, flip chip, through silicon via (TSV) and film wire technology, whose advantages and disadvantages are analyzed.
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