Anatomic considerations suggest distinct advantages associated with the use of subcristal pin positioning for pelvic external fixation compared with the alternative pin positions currently employed.
基于解剖学的知识认为，相比目前普遍应用的其他固定针置入方式，骨盆外固定的嵴下入针方式具有其独特的优势。
The mechanism is comprised of steel sleeve, water nozzle, spring, positioning pin and piston.
装置由钢套、水嘴、弹簧、定位销和活塞等组成。
This machine is equipped with Korean made CCD camera for pin point positioning.
此十字定位打孔机利用韩制高倍率ccd镜头来进行定位。
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