大家都搜：
硬层
1、formation───n.形成；构造；编队
2、formation company───组建公司
3、chlorohydrin formation───氯醇形成
4、conidium formation───分生孢子形成
5、granite formation───花岗岩建造
6、rock formation───岩层
7、word formation───n.构词，构词法；词性转换；n.构词，构词法; 词性转换
8、formation lyrics───编队歌词
9、droit formation───法律培训
1、Suitable for medium hard formation.───适应于中等硬度地层。
2、A new type bottom hole assembly is provided for drilling in high angle deviated and hard formation.───为大倾角硬地层易斜区防斜打快提供了一种新型的钻具组合类型。
3、Suitable for coring in very hard formation with abrasiveness . Core recovery rate is high.───适用于高等硬度及研磨性的地层取芯，取芯收获率高。
4、The technology represents the trend of efficient drilling hard formation.───它代表着高效钻越硬地层的一个发展方向。
5、Suitable for coring in medium hard formation with abrasiveness . Core recovery rate is high.───适用于带研磨性的中硬地层取芯，取芯收获率高。
6、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。
7、Quickly Drilling Technology and Hitting Target in the Bottom Hard Formation in the Well Po-2───坡2井下部硬地层井段快速钻井中靶工艺技术
8、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。
9、Failure accident are liable to occur in the deep well and hard formation. Fatigue faliure is the main faliure form.───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。
1、KQC series of air hammers used in gas drilling can solve certain problems, such as lower ROP(Rate of Penetration) and well deviation, which occurred in mud drilling in above medium hard formation.
2、A new type bottom hole assembly is provided for high angle deviated and hard formation.
3、The position of hard formation and pile broken during pile driving also conformed to this rule.