round-head bolt,snap head bolt,button head bolt,case bolt

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。

Shock initiation behaviors of PBX-9404 impacted by round-nosed steel projectiles were studied numerically by means of adding two kinds of reaction-rate into two-dimensional finite element code DYNA2D.

在二维有限元动力分析程序DYNA2D中加入了两种反应速率模型 ,对圆头钢弹撞击PBX 940 4炸药的冲击起爆行为进行了数值模拟研究。