岩石钻

Marine bivalve that bores into rock or clay or wood by means of saw-like shells.

用它锯一样的壳在岩石、泥土或木头中钻洞的海生双壳类动物。

It is points out that the bore-hole trajectory is related to not only BHA and Bit-Rock mutual action , but also the drilling string vibration and the hydraulic action of drilling fluids .

提出了井眼轨迹不仅与下部钻具组合和钻头与岩石互作用有关，而且与钻柱的振动和钻井液水力作用有关。

To the same kind of rocks, the penetration rate increases with the increases of electric bit thermal power. When electric bit thermal power keeps fixedness, the penetration rate increases in various degrees with the increases of bit load in difference rocks. Increasing the bit load is beneficial to improve the quality of glass hole wall, but the bit load should not be too big.

对于同一种岩石，钻进速度随钻头电热功率的增大而增大；当钻头电热功率不变时，根据所钻岩石岩性的不同，钻进速度随钻头轴载的增大而不同程度地增大，增加钻头轴载有利于提高玻璃状孔壁的质量，但不宜过大。

Jule demonstrates the use of a roc hammer drll.

朱莉表明，使用一种岩石锤钻。

The kerf is the outside boundary of the tunnel wall that a boring machine gouges out as it bores through the ground or rock.

切口在隧道壁边界的外面，隧道壁是由钻机在钻透土地或岩石时挖出的。

Used grey relational cluster analysis methods, establish the relationship of good performance drill and rock mechanics parameters.

采用灰关联聚类分析方法，建立了实际使用功效较好的钻头与岩石抗钻特性的对应关系。

Life leaps like a geyser for those who drill through the rock of inertia.

对于那些钻透了惰性岩石的人来说，生活跳跃的就像是一汪间歇喷泉。

The intention is to drill a 250m deep stratigraphic exploration bore which will allow Widespread to confirm the shape of the Kotuku anticline, recover samples of the rock strata and the nature of any fluids contained within it.

此举的目的是钻一个250米的深层勘探孔，便于该公司确认Kotuku地区的背斜形状，采集一些岩石层组织样本及岩石层中天然液体的样本。

Based on the evaluation of rock mechanics properties of undrilling formation, a fuzzy optimization model for selecting the best similar layers with the same rock mechanics properties was established by applying theory of fuzzy optimization. Firstly the best similar layer located the undrilled area was chosen by the model. Secondly the performance of the bit used in the selected layer was evaluated by economic benefit index.

该方法在待钻地层岩石力学性质评价的基础上，首先应用模糊优选理论建立了地层岩石力学性质相似层位的模糊优选模型，用其进行相似层位的优选，然后应用经济效益指数法对相似层位的钻头性能进行评价，最后给出合理的钻头选型结果。

Nowadays, at home and abroad, there are few reports about how to predict rock drillability of wildcat well before drilling in new exploration area.

目前，国内外关于新探区野猫井的岩石可钻性钻前预测方面的研究很少。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。