The thread of abraded unequal spiral shifting roller is actually a "uniform increasingly dispersing-ratio spire".
经过磨损的不等距螺旋输送辊的螺纹是一条“等变距螺旋线”。
There exists a spiral clearance space in the API round thread casing joint which is effected by the thread tolerance ranges.
API套管圆螺纹自身存在牙间间隙，并形成螺旋状空间间隙带。
Something, such as the thread of a screw or the spiral condenser in a still, that resembles a worm in form or appearance.
状的物品某物，如螺旋线或蒸馏器的螺旋冷凝器，在构成或外表上像蠕虫。
In normal use, non spiral crown should push the crown back to the original position, the crown screw thread to prevent water infiltration.
正常使用中，非螺旋式表冠应将表冠按回原始位置，螺纹表冠应旋紧以防止水渗入。
Screw: In machine construction, a usually circular cylindrical member with a continuous spiral rib or thread, used either as a fastener or as a force and motion modifier.
螺纹件：机器结构中带连续螺旋肋的圆柱形件，用作紧固件或力和运动变换装置。
Screw: In machine construction, a usually circular cylindrical member with a continuous spiral rib or thread, used either as a fastener or as a force and motion modifier.
螺纹件：机器结构中带连续螺旋肋的圆柱形件，用作紧固件或力和运动变换装置。
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