查询词典 rock-firm

For earth rock-fill dams, problems about seepage are very serious, so it is necessary to analyze seepage in earth rock-fill dams feasibly and correctly.

在土石坝中，因渗流引起的滑坡、渗透破坏尤为严重，所以合理、正确地对土石坝进行渗流分析是必不可少的。

For earth rock-fill dams, problems about seepage are very serious, it is necessary to analyze seepage in earth rock-fill dams feasibly and correctly.

在土石坝中，因渗流引起的滑坡、渗透破坏尤为严重，合理、正确地对土石坝进行渗流分析是必不可少的。

Shandong Rock Drilling Tools Factory Co., Ltd. was founded in 1993, is a rock-drilling and mining brazing equipment research and production of professional businesses, are "high-tech enterprises in Shandong Province","state-level Torch Program project implementation unit,"" China Patent Shandong Star Enterprise "," Chinese famous brand of township enterprises of key enterprises "," AAA "grade credit enterprise, the country's largest production base of the first solder, the overall strength ranks with the industry-leading position nationwide.

山东凿岩钎具厂有限公司始建于1993年，是凿岩钎具和矿用机具研究和生产的专业企业，是&山东省高新技术企业&、&国家级火炬计划项目实施单位&、&中国专利山东明星企业&、&中国乡镇企业创名牌重点企业&，&AAA&级信用企业，全国最大的钎头生产基地，整体实力位居全国同行业领先位置。

How to achieve the most efficient rock-breaking is the research direction of the rock-breaking technique.

在不同泵压和淹没压力条件下，针对不同类型的空化喷嘴对高压空化水射流破碎岩石效果进行了一系列实验研究，其主要目的是探讨高压空化水射流的冲蚀能力与水力参数的相互关系，提高破岩效率。

Based on the mutual effect between PDC cutter and rock during the rock-breaking, the analytical approach of rubbing contact finite element is given.

PDC具有很高的硬度和耐磨性，作为高效切削元件被广泛地用于破碎岩石。

This is because the jet particle velocity of the swirling water jet is three-dimensional, and its rock-breaking manner mainly has a slopping impact. Thus, the interference from returning fluid is less. All these aspects make it easy to draw and shear the rock surface.

计算结果与试验一致，表明旋转射流具有较强的破岩能力，其原因是旋转射流的质点具有三维速度，破岩时以倾斜冲击为主，易于在岩石表面形成拉伸和剪切破坏，回流的干扰较少。

Combining the performance of the formation rock mechanics with the rock-breaking mechanism of the PDC bits, the PDC bits suitable for the combination driving drilling in the northeastern Sichuan were selected.

通过对地层岩石力学特性的研究，结合PDC钻头的破岩机理，筛选出了川东北地区适合于复合钻井的地层。

The measurement and analysis of recess by tri-cone bit teeth and bottom-hole pattern is an important link of drilling test,a key means of studying rock-breaking mechanism,and valuating rock-breaking efficiency.

以三牙轮钻头上单齿圈为对象进行试验，研究钻头破碎岩石后得到的破碎坑。

The heat insulation materials of the XPS of which decrease embankment height, thermal pipes setup in sun-facing side of embankment, crushed rock cover and shading board are used to adjust the subgrade damages caused by the thaw basin. Crushed rock-based embankment and both sides thermal pipes are used to adapted to subgrade damages caused by thaw-sandwich layer. The berms are adapted to subgrade damages caused by the frozen bulge.

针对融化盘偏移所引发的病害，提出可采用XPS板路基降低路基高度，或在阳坡一侧采用热棒路基、碎石护坡路基、遮阳板路基等工程措施进行治理；针对融化夹层所引发的病害，提出可采用片块石路基、双侧热棒路基进行治理；针对冻结核发育所引发的病害，提出可采用防水保温护道进行治理。

But, didn't°yet be over, saw a cake of rock Fu top a snake body, then it quick station at rock up, put out strength of jump.

可是，还没完，只见一块石头覆上了蛇身，然后之敏站在了石头上，使劲的跳着。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。