毛孔

There is a pin hole between outside shell and output axis. 外套與輸出軸的徑向有一個插銷孔。

Drilling method of pin hole: the pin hole shall be predrilled by supplier prior to hot dip galvanization. 銷釘孔的鉆法：銷釘孔應(yīng)為供應(yīng)商在熱鍍鋅預(yù)鉆好。

Flux Corrosion is typified by pin hole leaks, generally in the bottom of a horizontal line. 典型例子是由于針孔泄漏導(dǎo)致的焊劑侵蝕，通常發(fā)生在水平管道的底部。

The paper analyses the necessity for piston in modern auto to adopt noncircular pin hole. 簡述了采用活塞異形銷孔的必要性及其結(jié)構(gòu)特點。

The Si-Mn steel track plate and pin usually exist the early abrasion, one of the main reasons is the burr defect of pin hole. 硅錳鋼履帶板銷孔存在脈紋鑄造缺陷是造成履帶板與履帶銷出現(xiàn)早期磨損現(xiàn)象的根本原因之一。