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to phrases
crest clearance
oil 顶部间隙; 端部间隙
plast. 螺齿顶间隙; 径向间隙
tech. 螺杆螺纹的顶部间隙; 齿端部间隙; 齿顶间隙
crest clearance: 2 phrases in 1 subject
Technology2