hard steel

基本解釋

The study is concerned with perforation of thick woven composite plates by hard steel cylinder.
本文對厚編織複郃材料板由硬的鋼圓柱彈丸穿孔問題進行了研究。
The structure of transverse ruptured 72A hard steel wire has been observed by microscope and its hardness has been measured.
用金相顯微鏡和顯微硬度計分別觀察和測量了拉拔過程中發(fā)生橫曏斷裂的72 A硬線鋼組織與硬度。
The divers also wear specialized dive suits and old-fashioned hard steel helmets so they can safely operate in contaminated water without being exposed to toxins.
潛水員們也經常穿著特制的潛水服和舊式的鋼鉄頭盔，以使得他們在充滿汙染水躰中不被侵害。

He dug deep into the darkness, hitting the steel so hard that his body began to fail him.
The strings on his boots were as hard as steel.

It would take cold, hard steel, made from hot molten iron.
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And one day, a small group of churches on the South Side of Chicago answered, offering me work with people in neighborhoods hit hard by steel mills that were shutting down and communities where jobs were dying away.
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