Wig: Manufactured head covering of real or artificial hair worn in the theatre, as personal adornment, disguise, or symbol of office, or for religious reasons.
假发：用真发或人造发制成的头套，作戏装或个人装饰品、乔装用品或职位的象征。
This article introduced the experiment of residual stress in flat tubeplate head of large scale fuel boiler that was manufactured by cold rotary extruding and butt weld.
本文介绍了大型燃油锅炉经拼板焊接和冷旋压加工制造而成的平管板封头残余应力试验。
A high pressure rated cementing head has been designed and manufactured to meet the special needs of cementing operations for deep and ultra-deep Wells.
针对深井、超深井的固井特点及其特殊要求，研制了系列新型高压水泥头。
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