查询词典 drill block

Through similar simulation test of block top-coal drawing, the influence of coal block size and block position in top coal on the recovery ratio and drawing manner is studied. It is found that the drawing manner has the different adaptation to the top coal which has different block distribution. The caving capacity is mainly decided by the block size. The top-coal which has layer difference of block with the same size has different recovery ratio. It is shown, that, to the given top-coal blocks, the recovery ratio of uniformly mixed blocks is maximal in the manner of drawing at interval of one support.

研究表明，顶煤块体大小是影响顶煤回收效果的主要因素，在顶煤块径一定的条件下，块体层位分布不同是造成顶煤回收率差异的主要原因，研究表明各级块度均匀混合时顶煤回收效果最好，块度从下向上增大分布次之，大块为中位顶煤时回收效果最差；各种放煤方式的适应性不同，各级块度均匀混合的顶煤适合用间隔放煤；块度从下向上增大适合用顺序放煤；大块在顶煤中位分布时，中硬煤以下适合用间隔放煤，硬煤应采用顺序放煤方式。

The method includes establishing one reverse mapping list comprising list items; reading the mapping data recorded in the data block state list item area to the list items during system initialization; checking reverse mapping list and finding the data block in Flash memory during reading some logic block; and writing the updated data into the empty data area of one new data block, writing the mapping data between the new logic block and the new data block into the state list item area and updating the mapping data of the corresponding list item in the reverse mapping list during writing some logic blcok.

包括：建立一个由表项组成的反向映射表，一个表项对应一个逻辑块；在系统初始化过程中，将数据块状态表项区中记录的映射信息，按逻辑块号与表项间的对应关系读取到各表项中；读取某逻辑块时，以其逻辑块号作为表项索引查找反向映射表，定位到表项，根据表项中记录的映射信息，在Flash存储器件中查找到数据块；写入某逻辑块时，将更新数据写入一新数据块的空白数据区中和将该逻辑块与新数据块间的映射信息写入状态表项区中，同时更新反向映射表相应表项的映射信息。

The treatments of rice straw-based blocks were as follow: Rice straw block Ⅰ was composed of 74.2% rice straw treated with chemicals, 20.4% concentrate mixture and 3.3% minerals premixture; Ten percent rice straw from rice straw block Ⅰ was equally substituted by corn silage or concentrate for rice straw block Ⅱ or Ⅲ; Additional 10% water was supplemented to rice straw block Ⅳ, based on the straw block Ⅰ, in order to decrease the rigidity of the straw block.

复合稻草块的调制：①稻草块Ⅰ由74.2%的稻草、20.4%混合精料等压块调制而成；②稻草块Ⅱ、Ⅲ是将稻草块Ⅰ中10%的稻草分别用青贮玉米、混合精料等量替代调制而成；③稻草块Ⅳ的组成与稻草块Ⅰ相同，仅在压块时额外添加10%的水分，以降低其硬度。

10 Rad/a, 2.15×10^(-9) rad/a, 1.45×10^(-9) rad/a, respectively. The activity of the Qaidam block, Ganqing block and Chuandian block is stronger than that of the stable South China block and Indian-China block. Every block rotates clockwise around the east of the Himalayan syntaxis.

柴达木地块、甘青地块、川滇地块活动性较强，而华南地块、印支地块活动性较弱，属于稳定地块；各块体围绕东喜马拉雅构造结呈顺时针旋转。

FYH KYH outside Japan with legislation Block Spherical Bearing Block, Square Block Round diamond ring-type slider Block Block stent Block.

日本 FYH KYH 外球面轴承带立座方形座菱形座圆形座滑块座环型座支架座。

A person can place a drill in the drill chuck that is secured in the spindle of the drill press. They can then select the desired speed for rotation (commonly by switching belt pulleys), and activate the spindle. Then they manually pull on the quill lever to drive the drill into the workpiece being machined.

操作者可以将钻钻头装在钻夹中，钻夹固定在台钻的轴里；接着可以选择所需的转速（通常通过切换皮带改变主轴转速），并且启动主轴旋转，然后操作钻轴手柄，将钻头钻入被加工的工件。

In drill ing exploration and well drill ing Industry, the drill ing pipe and drill collar are key apparatus.

例句1。钻杆和钻铤等管状螺纹连接件，是钻探和石油钻井工业中的关键设备。

When analyze the forced vibration of drill string ,it is taken into consideration that the friction between drill string and wellbore impact on the vibration of the drill string.So static analysis of the drill string is included in this paper.

由于本文在分析钻柱的强迫振动时，考虑了钻柱与井壁摩擦阻力对钻柱的振动的影响，所以对钻柱的静力学也进行了分析。

With a charge drill to connect φ3-φ4mm long drill bit through the G-clamp drill to drill Ball Valves into the stuffing box stuffing inside.

用充电钻接上φ3-φ4mm的长钻头，通过G型夹具向填料箱钻孔至钻入填料函内。

At least one through-bore in each of the drill guide arms guides a drill bit at right angles into the work piece, with each through bore (17, 18) having an axial length sufficient for guiding a hand held drill to drill a work piece bore at right angles to the joint surface.

在每个钻孔导向臂中至少有一个通孔，用于以直角将钻头导向到工件中，每个通孔（17，18）都在轴向上足够长，以在与连接表面大致成直角的方向导引手持钻头来钻出工件孔。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。