( 所谓「穿通孔（clearance hole）)68b 两种，用不具备螺纹牙的孔68b 固定取景器适配器 66 和摄影机适配器64，用螺丝孔68a 固定三脚适配器72 和取景器适配器66。
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slug clearance hole 冲裁废料漏料孔
rivet clearance hole 铆合间距孔
Ejector Pin Clearance Hole 顶出梢的间隙孔
clearance hole for rivet 铆钉用通孔
hole clearance 套眼与井眼的间隙
pin-hole clearance 销钉间隙
bolt hole clearance 螺栓孔间隙
bolt-hole clearance 栓孔间隙
roll clearance inspection hole 滚筒间隙检视孔
The leak detection hole axis should pass the middle of two neighboring studs clearance holes.
检漏孔中心线应对两相邻螺柱通孔跨中。
A loaded pin bears on a hole with small clearance.
一个受载销钉支承于一个具有微小间隙的孔上。
Retaining mechanism, with a tiny stroke clearance, solves the problem of high precision machining on small pieces and blind hole pieces.
冲程间隙极小的锁紧机构更能解决短小零件及盲孔零件等高精度加工难题。
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