钻头: boring crown; bore bit; dril ...过早: too early; premature磨损: wear and tear; abrasive wear ...钻头过度磨损: bit excessive wear钻头过度使用: overuse of bit; overuses of bit早磨: hayama钻头磨损: bit wear过早更换钻头: premature bit change钻头导常磨损: bit unfavorable wear钻头磨损等级: bit grading钻头磨损分析: bit dullness analysis钻头磨损特征: dull bit appearance钻头外侧磨损: junk damage钻头异常磨损: bit unfavorable wear钻头正常磨损: bit uniform wear钻头直径磨损: bit gage wear; gauge loss of bit磨损报废的钻头: throwaway bit钻头磨损指示器: dull bit indicator钻头牙齿磨损程度: bit-tooth dullness钻头直径磨损量: drill bit gage loss过早: premature; untimely 过早的决定 a premature decision; 预言这次对话可能有什么结果, 现在还为时过早。 it is yet premature to predict the possible outcome of the dialogue. 工程师的过早去世推迟了工程的完工期。 the untimely death of the engineer delayed the completion of the project一次磨损报废的钻头: throw-away bit钻头未磨损或磨损不大就起出: pull it green钻头未磨损或磨损不大就起出;螺纹拧得过紧: pull it green磨损: wear and tear; abrasive wear; abrase; abrade; detrition; wear; scuff; wear-out; fray; battering; abrade wear; abrasion; attrition wear; defacement; excoriate; foreworn; wear down; wearing; wornout 我的鞋跟给磨损了。 the heels of my shoes have (been) worn down. 这辆卡车基本上没有什么磨损。 the truck shows scarcely any sign of wear and tear.; 磨损程度 degree of wear; 磨损度 abradability; 磨损腐蚀试验 erosion corrosion test; 磨损检验 examine for wear; 磨损留量 wear allowance; tear-and-wear allowance; 磨损试验 [土] attrition test; abrasion test; 磨损试验机 abrasion tester; abrasive wear testing machine; wear-test machine; 磨损数据 wear data; 磨损速度 rate of wear; 磨损系数 coefficient of waste; coefficient of wear; wear coefficient; mortality factor; 磨损作用 abrasive action