2.4 对中设备 (centering devices) ①中心螺旋(central screw) :上有挂钩(hook) :悬挂垂球; ②垂球(plumb bob) :对准地面目标点位中心; ③光学对中器/光学垂球(optical plummet):直接瞄准地面...
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finally tighten the central screw 最后收紧对中央螺杆 ; 终于拧紧中央螺钉
central screw extruder 中心螺杆式挤塑机
central fixing screw 定心螺旋
It is shown that the existence of central screw conveyer produces the contrary swirl flow under some of the swirl vane Angle condition.
研究表明：由于进料螺旋输送器的作用，在一定的导流叶片角条件下存在着双旋流流场。
Loose soleplate screw of the roller shelf, and adjust the central height of the two rollers by increasing or decreasing cushion, then tighten the screw.
松开罗架的底板螺丝，用增垫和去垫的方法调整两罗拉的中心高度，然后再拧紧螺丝。
After the fixing bolt is completely screwed in the central hole of the screw, the upper end-face of the fixing bolt is lower than the upper end-face of the fixing sleeve pipe.
固定螺钉完全旋入螺杆中心孔后，固定螺钉的上端面低于固定套管的上端面。
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