circular head grooved bolt是什么意思

用法例句

Round head of plate will increase shear amount of plate,which could reduce the plate yield.

钢板圆头会增加钢板的切损量,影响成材率。

In order to reveal proteins differentially expressed in round headed sperm in human being, two dimensional gel electrophoresis and mass spectrometry were performed on 30 normal sperm samples from 10 fertile men and 3 sperm samples from a globozoospermic patient.

圆头精子症是一种表现为顶体缺失的男性不育症。