钻进

14 Drilling with cone bit in the section.

此段地层采用牙轮钻头钻进。

Research on cone/bit speed ratio simulation model of tri-cone bit s;2. In this paper, the kinematics simulation model of tri-cone bit s was established according to the roller cone bit geometry and kinematics.

根据钻头几何学和运动学建立起了随钻运动的三牙轮钻头的计算机运动学仿真模型，该仿真模型既表示出了钻头上各牙齿的形状、大小和在钻头上的分布情况，又可真实反映钻头钻进过程中各牙齿的瞬时位置和相互关系。

Through the intermediate gear Z12, the elevator shaft's gear Z13 and shaft are driven to turn, then via friction cone clutch or planetary mechanism the drum obtains six hoisting speeds.

a、冲击钻进：将变速箱右手柄板至&卷扬&位置，变速箱Ⅲ轴齿轮Z8与Ⅳ轴的齿轮Z10啮合，经中间齿轮Z12带动升降机轴上齿轮Z13及轴旋转，通过锥形摩擦离合器或游星轮机构使卷筒获得六种提升进度

The reliability of ages from optically stimulated luminescence dating of boring core has a stringent dependence on characteristic of samples, and on motheds of boring and sampling.

钻孔岩心测年样品具有较一般地质样品更为复杂的影响因素，样品特征对年龄可靠性有非常重要的影响，且主要受钻进方法和采样过程的制约。

When using a full core collected at boring, the uncertainty of estimation to equivalent dose at OSL dating is affected by some factors, such as mixture occurring in soft soil and sand, contamination due to mud penetrating into sample, the possible influence of heat from pressure and attrition on luminescence signals.

采用回转钻进取全心的方法，对光释光测年带来的不确定性影响因素主要有：扰动导致软弱土层、砂层的混染；泥浆渗入对样品的污染；挤压和摩擦生热对释光信号的可能影响等。

Strontium 90, released through nuclear explosions into the air, comes to the earth in rain or drifts down as fallout, lodges in soil, enters into the grass or corn or wheat grown there, and in time takes up its abode in the bones of a human being, there to remain until his death.

由核爆炸释放到空中的锶90以放射性尘埃的形式随雨水或漂浮物落到地球上，留在土壤里，进入地上生长著的草、玉米或小麦等植物体内，最后钻进人体，停留在骨骼里直到人死去。

The results show that the vibration intensity of the substructure has a connection with the depth of the well, the geological condition and the density of drilling fluid; the horizontal vibration of the substructure is mainly caused by bent kelly; the included angle between the axis of cardan shaft and the derrick floor is also the cause of the vibration in three directions, and the cause of t...

分析结果表明，底座的振动强度与井深、地质条件和钻井液密度有关；弯曲的方钻杆是造成底座水平方向振动的最主要原因；万向轴因与钻台面存在夹角，从而引起底座在三个方向的振动；采用四挡钻进时，万向轴的工频及其倍频接近底座垂直方向的固有频率是引起底座在该方向振动强烈的原因。

During several walks to the park, Earl and I had noticed many children who ignored the fences and found holes to allow them through in order to play in the dirt in the river bed and run up and down the sloping concrete banks.

在好几次区公园散步的时候， earl 和我都发现许多孩子忽视栅栏，找到窟窿钻进去为了在河床的泥巴里玩，在陡峭的水泥岸上跑上跑下。

To meet the requirement of small diameter and shallow hole drilling for gas drainage in coal tunnel, the ZDY1200L track-mounted hydraulic tunnel drilling rig has been developed.

为适应当前煤矿井下小直径浅孔瓦斯抽放钻进的需要，研制了ZDY1200L型履带式全液压坑道钻机。

I have played for a moment in the afternoon, cutting through battle line , drill has entered the book stack just.

下午，我玩了一会儿穿越火线，便又钻进了书堆。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。