您要查找的是不是：
- collapsible strata 易坍塌地层
- Keywords multi-hydroxyl polymer;anti-sloughing agent;drilling fluid additive;water base drilling fluids;performance properties evaluation;borehole stabilization;collapsible strata; 多羟基聚合物;防塌剂;钻井液处理剂;水基钻井液;性能评价;井眼稳定;易坦塌地层;
- intensely weathered loosen quicksand and collapsing strata 强风化松散、流沙、坍塌地层
- We can follow the history of life through the strata. 我们可以通过这一层层的地层跟踪生命的历史。
- They represent each society stratum. 他们代表各个社会阶层。
- The older strata gradually disintegrate. 较老的岩层渐渐风化。
- APPLICATION OF PAA SOLID-FREE FLUSHING FLUID TO DRILLING IN COLLAPSE STRATA PAA无固相冲洗液在水敏岩层钻进中的应用
- The older strata gradually disintegrated. 年代较久的地层逐渐崩解了。
- It was made into a collapsible component. 它被制成一可伸缩的部件。
- Buying Aluminium collapsible Tube making. 信息主题:卡拉奇商人求购铝质软管加工设备。
- They do not constitute a separate class or stratum. 知识分子和青年学生并不是一个阶级或阶层。
- Yeah, fully collapsible, easy to carry. 是的，完全折叠，携带方便。
- Collapsible plug on the back of wall charger. 可折叠堵塞墙充电器回来。
- These strata, lying apparently in contact, are in fact abysmally separated. 这些表面上相触的地层实际上相隔很远。
- Create a collapsible tree of plot ideas. 为你的计划跟腹稿创造一个可折叠的故事树。
- To expose(rock strata)by erosion. 剥蚀因腐蚀而露出（石层）
- He hates the privileged stratum. 他憎恨特权阶层。
- They belong to the rich strata and never work. 他们属于富裕阶层，不干活。
- They represent all social strata . 他们代表各个社会阶层。
- To expose(rock strata) by erosion. 剥蚀因腐蚀而露出（石层）
