Suitable for medium hard formation.
适应于中等硬度地层。
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。
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。
Medium hard formation with high compressive strength. Such as hard shale, limestone, sandstone, dolomite, anhydrite and marble.
高抗压强度的中硬地层，如硬页岩。石灰岩。砂岩。白云岩。和硬石膏。大理石。
Medium hard formation with high compressive strength. Such as limestone, taconite, blaize, quartzite, silica sand, basalt, granite ect.
高抗压强度的硬地层，如硬石灰岩。燧岩。硬砂岩。石英岩。石英砂。玄武岩。花岗岩等极硬岩层。
Our country is rich in depth oil and gas accumulation resources. It is difficult to drill the deep well and hard formation where the exploration and the development meets.
我国存在丰富的深层油气藏资源，勘探和开发所遇到的难题就是钻深井硬地层。
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.
在油田气体钻井中使用KQC系列空气锤，解决了泥浆钻井在中硬以上地层中钻速慢、易井斜的难题。
It might also be hard for airlines to co-ordinate the departure times and destinations of passenger aircraft in a way that would allow them to gain from formation flight.
航空公司可能也很难协调客机的起飞时间和目的地，使它们能够从编队飞行中获益。
The third fossil formation containing both soft-bodied and hard-bodied animals provides evidence of the result of the Cambrian explosion.
第三个化石地层中既有软体动物，也有硬体动物，为寒武纪大爆发的结果提供了证据。
This near view offers astronomers a relatively local test bed for studying intense star formation processes that are usually hard to observe in detail because of their great distance from us.
如此之近的距离足以为天文学家提供一块相对局部的试验田，去研究激烈的恒星形成过程，通常因为距离太过遥远，这种过程的细节很难被观测到。
Although meteorologists know what conditions favour their formation, they are hard-pressed to say exactly where a storm will occur until it is almost too late.
尽管气象学者们清楚地知道有利于雷暴形成的条件，但是要及时而又精确地预测雷暴发生的地点使他们感到压力重重。
Capello has worked hard with the group and he would have been looking for signs that his formation has the ability to accommodate alterations which will be needed at the World Cup.
卡帅和他的球队一直在努力的工作，而他也一直在努力的寻求在世界杯中球队的阵型所需具备的临场应变能力。
Although meteorologists know what conditions favour their formation, they are hard-pressed to say exactly where a storm will occur until it is almost late.
尽管气象学家知道什么样的条件促进它们的形成，但往往到了基本上晚了的时候他们才艰难的说出雷暴到底什么时候发生。
Low compressive strength of soft to medium formations. Such as soft shale, soft limestone, soft sandstone, hard and soft abrasive interbedded medium formation.
低抗压强度的软到中等地层，如中软页岩。中软石灰岩。中软砂岩。和软硬研磨性夹层的中等地层。
The formation of hard bubbles by single-pulse bias field in epitaxial garnet films was investigated in some detail.
实验研究了一次脉冲偏场作用下外延石榴石膜硬磁泡的形成规律。
The formation and the structure of the unique piled lamellae rows in hard elastic polypropylene have been studied by WAXD and SAXS techniques.
用广角X射线衍射、小角X光散射等手段对硬弹性聚丙烯中排状堆积片晶的形成及结构进行了研究。
This paper studies the hydration sloughing mechanism of three kinds of hard and brittle shales of Shahejie formation in Gangdong oilfield.
研究了大港油田港东地区沙河街地层三种硬脆性泥页岩的水化坍塌机理。
But the formation of law belief is a long and hard process, it not only needs principal part condition, but also object condition.
法律信仰的形成是一个长期、艰难的培育过程，不仅需要主体条件，还需要客体条件的共同作用。
The severe plastic deformation is the main mechanism of white layer formation during precision hard part machining process.
精密硬态切削表面白层的形成是剧烈塑性变形导致的。
The decision factor of formation genius should be a diligence....... Have several cents study hard bitterness practice is become direct ratio.
形成天才的决定因素应该是勤奋。……有几分勤学苦练是成正比例的。
PDC bits have been used to drill the homogeneous formation from soft to medium-hard, but they are not suitable for drilling in gravel and multi-interbedded formation.
PD C钻头用于软到中硬的均质地层钻进具有钻速高、寿命长等特点，但不适合含砾石地层和软硬交错地层。
The formation and stability of VBLs in the hard domains is very important to design and use ofBLM.
硬磁畴畴壁中垂直布洛赫线的形成及其稳定性的研究，对布洛赫线存储器（BLM）的研制与使用具有重要意义。
Casing resistivity logging is hard to realize because of the strong hindering effect of casing to electrical current and only feeble current can enter the formation.
套管井中，由于套管对电流的强阻隔作用，只有极其微弱的电流可以进入地层，使得过套管电阻率测井很难实现。
With further increase of salt concentration, interaction between polymer and ion enhanced, which brought about the formation of new hard - segment aggregates.
随着盐浓度进一步增加，聚合物-离子相互作用增强，体系中硬段结构出现新的聚集形态。
Considering the formation conditions of hard domains, it is reasonable to deduce that the increase of the number of VBLs in their walls leads to substantial change of their static characteristics.
从形成条件可以合理地推论，畴壁中VBL数目的增加导致硬磁畴静态特性的质的变化。
The formation of hard tissue and differentiation of dental epithelia were analyzed histologically.
组织学观察上皮分化情况和硬组织形成情况。
Conclusion Amelogenins has induction in formation of hard tissues in dental pulp following the inhibition of formation of odontoblasts by CP.
结论：CP抑制成牙本质细胞形成后，釉原蛋白具有诱导牙髓形成硬组织的作用。
Production experiment indicates that this kind of drill bit has ideal effect in the middle-hard broken formation and the soft-hard interlayer as well as in the gravel formation.
生产性试验表明，该类型钻头对于钻进硬而破碎地层、软硬夹层以及卵砾石地层均具有很好的使用效果。
It was found that the high crystallinity of the soft segment regions and the formation of hard segment domains are the necessary conditions for polyurethanes with good shape memory behavior.
通过DSC、弯曲实验和力学实验，研究了形状记忆聚氨酯的性能，发现软段高度结晶和硬段聚集形成硬段微区是其具有较好形状记忆性能的必要条件。
The air-bubble formation in the hard anodic oxidation of aluminum alloy (ZL109) pistol was studied using a pulse/galvanostat electric power supply device.
对铝合金阳极氧化区气泡形成的机理、影响和防止措施进行了探讨。
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