英语词汇hard formation怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

1
Suitable for medium hard formation.
适应于中等硬度地层。
2
A new synthetic diamond impregnated matrix for drill bit used in hard formation is designed.
针对软硬交错、研磨性高的地层设计了一种新型人造金刚石混合孕镶块。
3
Failure accident are liable to occur in the deep well and hard formation. Fatigue faliure is the main faliure form.
特别是在深井作业中及硬地层，容易发生失效事故，其中疲劳失效是主要的失效形式。

单词	hard formation
释义	hard formation 简明释义硬层网络释义短语 1 hard formation force 硬地层力 2 hard formation cutting head 硬地层钻头 3 medium hard formation 硬地层双语例句 1 Suitable for medium hard formation. 适应于中等硬度地层。 2 A new synthetic diamond impregnated matrix for drill bit used in hard formation is designed. 针对软硬交错、研磨性高的地层设计了一种新型人造金刚石混合孕镶块。 3 Failure accident are liable to occur in the deep well and hard formation. Fatigue faliure is the main faliure form. 特别是在深井作业中及硬地层，容易发生失效事故，其中疲劳失效是主要的失效形式。
随便看	shotcrete lining shotcrete machine shotcrete manipulator shotcrete repair shotcrete-rock bolt support shotcrete shotcrete shell shotcrete support shotcrete system shotcreting shotcreting machine shot cycle shot cylinder shot density shot depth shot down shot down shoot down in flames shot drill shot-drilled shaft shot-drill hole shot drilling shot-drilling shot-drilling machine shot-dye