您要查找的是不是：
- optimization before drilling 钻前优化
- BE SURE OF ADEQUATE FAN BLADE CLEARANCE BEFORE DRILLING. 在钻孔之前确辩扇叶片的干净。
- The decay is very deep, so I will use a local anesthetic before drilling. 龋洞很深，在钻牙前我将给您打一针麻药。
- But this pressure can only be guessed at best before drilling; therefore, we need to build some safety margin. 但在钻探前,最多只能对此压力进行推测;因此,我们需要留有一定的安全余量。
- The formation fracture profile can't be available before drilling in a new exploration zone. 新探区在未钻井时是没有地层破裂压力曲线的。
- "Pyramid Rover" crawled about 65 metres up a 20 by 20cm tunnel before drilling a hole in a stone door and then inserting a camera to film what lurked inside. "金字塔漫游者"沿着宽、高均为20厘米的通道上行65米后，被一扇石门阻挡，无法继续前行。机器人在石门上钻开一个小洞，将摄像机插入孔内，希望可以拍摄到隐藏在石门后的神秘物。
- There is almost nothingbut data of seismic network and seismic profiles to reveal thefeature of subsurface reservoirs on a pre-exploratory structures before drilling. 在开钻之前，预探构造上除了地震测网和地震剖面外，几乎再没有其它能够揭示地下储层性质的探测资料。
- In the evaluation exploration for Sulige gas field,a good result of applying the AVO technique,which has been taken as the major means,to predicting the gas potential of the targets before drilling has been obtained in this region. 在苏里格气田的评价勘探中 ,把AVO技术作为该区进行钻前目标含气性预测的主要手段 ,取得了很好的应用效果。
- In order to prevent formation crack,well falling down and polluting ground water during drilling operation,the well conduit shall be inserted into ground before drilling to form a closed annual space. 在钻井作业中,为防止地裂、井口坍塌和污染地下水资源,钻井施工前需要将导管打入地层中,形成封闭的环形空间。
- Based on the prospecting practices of many years, the paper has summarized 8 general lithologic features of core under normal stratigraphic sequence before drilling to the coal-beds in drill hole. 根据多年的勘查实践，总结提出了八条正常地层层序下钻孔见煤前的一般岩心岩性特征，对指导见煤预告等大有裨益。
- Sincereservoir prediction before drilling is very important, a new method" patternrecognition" is introduced in this paper so as to predict the lithological distribution in preexploratory wells. 鉴于钻前储层预测的巨大意义，本文将模式识别引入到这个领域，力图通过“由已知到未知”这一途径来预测预探井内的岩性分布。
- Early bound objects allow the compiler to allocate memory and perform other optimizations before an application executes. 早期绑定对象允许编译器在应用程序执行前分配内存以及执行其他优化。
- As a matter of fact, I've never been there before. 事实上我从未到过那儿。
- We started early in order to arrive before dark. 为了在天黑前到达，我们很早就动身了。
- You'd better set a goal before you start the drill. 练习开始前，你最好设定一个目标。
- The clerk marked up his daybook before going home. 办事员在回家前记好当天的日记帐。
- Let's dunk in the pool before dinner. 我们饭前到池塘里泡一会儿。
- I was inspired to work harder than ever before. 我受激励比以往任何时候都更加努力地工作。
- The fox ran away before the hunter shot it. 那只狐狸在猎人向它射击前跑掉了。
- Let's clean down the board before we paint it. 让我们在上漆以前把这块板洗干净。
