inner punch

基本解释

The quality of the internal surface can be greatly improved and the punch force can be significantly reduced by using inner set hose.
内置软管可以有效改善管材的内表面质量，并显著减小冲头推力。
For the defects such as dead zone and shrinkage cavity in conventional extrusion process, an inner cone punch was proposed to improve the metal flow behavior.
针对平模挤压过程中易产生死区、缩孔等流动缺陷，设计一种带内锥冲头用以改善成形过程中金属的变形流动行为。
But, Young says, when one worker is greeted with a polite how-do-you-do while the guy next door gets a playful pretend-punch, it's clear in an instant who is in the inner circle and who isn't.
但是史蒂芬杨说，当一位工作者是以礼貌的问候被接见，隔壁的工作者则是不被当作一回事看来，立即就能明显得知谁较受重用。