locking ball
定位钢球
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采用绳索取心钢球支撑小径锥面钻头定位偏斜技术对事故进行处理，经济有效。
Small diameter cone bit positioning deflection by wire-line coring with steel ball supporting was used to solve the problem economically.
youdao
自主开发产品：快卸销，定位销，球锁销，快速插销，不锈钢销。
Quick Release Pin, Ball lock pin, Detent pin, Locator pin.
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模块下移
不移动