double threaded screw 双纹螺钉 ; 双纹螺丝 ; 双螺纹螺钉
double-threaded screw 双头螺旋 ; 双缝干涉仪
double threaded nut 双螺纹螺母
double-threaded story 双重故事性
double threaded couplings 螺纹双接头
small double-threaded compression screw 小型双端螺纹加压螺钉
sesqui-threaded double-channel screw 一头半螺纹双槽螺杆
Objective To compare the clinical effectiveness of fixations of odontoid process fractures preliminarily with anterior single one-threaded and double-threaded canulated compressive screws.
目的初步比较经颈前路单枚单头螺纹中空加压螺钉与双头螺纹中空加压螺钉内固定治疗齿突骨折的效果。
Assorted spindle vane configurations with threaded and non-threaded ends, single and double shrouds.
主轴叶片有螺纹和非螺纹以及单,双罩两种可选。
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