numerical simulation research of wall rock stability of preparatory workings at chengchao iron mine

1、

the synthetic control of large-scale collapse of preparatory workings after submergence in chengchao iron mine

程潮铁矿淹井后采准巷道大面积坍塌的综合治理

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2、

vibration problems in high speed pump

高速泵振动问题的研究

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3、

improved mechanical seal in high-speed pump

高速泵机械密封改造

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4、

application of high speed pump in ammonia - refined system

高速泵在氨精制系统中的应用

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5、

design and implementation of high speed pump interlock system in hydrogenation unit

加氢精制装置高速泵联锁控制系统的设计与实现

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6、

design improvement on centrifugal high-speed pump and lubricating oil pump auto-starting

离心式高速泵与润滑油泵自启动控制设计改进

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7、

leakage cause analysis and reform for mechanical seal used in high speed pump

高速泵机械密封泄漏原因分析及改造

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8、

high-speed pump belongs to a specific centrifugal pump, and its appearance has put forward new requests and challenges for those designers.

高速泵是一种特殊的离心泵，它的出现对流体输送机械设计人员提出了新的要求和挑战。

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9、

establishment of diameter-at-foot volume tables for liaoning province

辽宁省根径材积表的编制

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10、

gravity drive becomes effective in the late stages of production on some gas-drive oil reservoirs.

有某些气驱油藏的开采晚期，重力驱动变得有效。

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11、

gravity drive is effective in the early stages of reservoir development only when there is high relief in the reservoir rock and oil column.

重力驱动仅在储层岩石中存在高闭合度和油柱的情况下在储层开发的早期是有效的。

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12、

gravity drive is characterized by a rapid production decline followed by steady production.

重力驱动的特征是产量快速下降后进入稳定生产期。

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13、

but kiseop and soohyun only see their friend acting like a insane person and are left helpless towards this situation.

但基石和秀铉只是看到他的朋友像疯了一样，并对此感到无助无奈。

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14、

only an insane person could perpetrate such a horrible crime.

只有疯子才犯这种令人发指的罪行。

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15、

an intermittently insane person who violates the administration of public security while in normal mental condition shall be punished.

间歇性的精神病人在精神正常的时候违反治安管理的，应予处罚。

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16、

he insane person outside the capital, with his wife and one of his daughters, told no, he sold rely on the word living.

那人外界都城他为疯子，带着老婆和一个女儿，三口都没工作，就靠他卖字为生。

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17、

simultaneously, matlab software was used to simulate the under-damped second-order linear system.

同时，利用MATLAB软件对此二阶欠阻尼线性系统做了仿真研究。

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18、

obviously the time of defrosting is related to outside air temperature.

除霜时间显然和外界空气温度相关。

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19、

air will pass through the wet cloth. the inside of the box will stay several degrees cooler than the outside air temperature.

空气会流经这些湿布，箱子里会保持低于外部空气好几度的温度。

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20、

the effect factors for the inner temperatures of covers are the solar intensity, outside air temperature and wind speed.

影响覆盖物内部温度之主要因子为大气日照量，大气温度与风速。

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