pivot screw meaning in Chinese

螺旋柱桩
枢轴螺钉
枢轴螺旋

One thing to take into consideration when looking at a previously owned knife is that the former owner may have loosened the pivot screw so they could " sling " the blade open , thus compromising the makers original " specs " for blade play
对购买二手刀来说，一个要考虑的因素是，前拥有者可能为了用“甩”法开合刀体而拧松刀轴螺丝，这会影响制刀者对该刀的设计初衷。