螺旋沟 meaning in English

spiral groove
sulci spiralis

Wire spiral groove machine
螺旋沟机丝
Modelling and test study of the influence of the boring bar diameter on spiral ditch in deep - hole boring
深孔镗削中镗杆直径对螺旋沟影响的模型和试验研究
Wire offensive machine wire spiral groove machine cone stalk cutter wenling guanzhong tool co . , ltd
机用丝攻螺旋沟机丝锥柄立铣刀温岭市关中工具有限责任公司
Wenling city in central tool is a limited liability company specializing in the production of large silk offensive machine new and old superscript , single vessel , to pay into the left teeth . non - standard , the
温岭市关中工具有限责任公司是一家专业生产机用大丝攻新老标单支成付左牙非标，螺旋沟