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- pressure balance principle 压力平衡原理
- The mathematical model with threshold pressure gradient and injection-production ratio is constructed when the formation pressure change linearly on the base of material balance principle. 利用物质守恒原理,建立地层压力线性变化趋势下考虑启动压力梯度和注水强度影响的渗流数学模型。
- To determine dust catalyst density in the smoke of refinery set by pressure balance system. 采用动压平衡采样系统测定炼油厂催化装置再生烟气中的催化剂粉尘,结果表明,该系统比预测流速法自动化程度高,故障率低,操作简便,数据准确可靠。
- Pressure balance is also applied in WOB calculation. Field test showed that both models are reliable and the calculated results are correct. 同时也用压力平衡法计算出钻压，现场试验表明，两模型可靠、计算结果正确。
- Earth pressure balance (EPB) shield is used most extensively in shield construction. 土压平衡式盾构机是盾构法施工中应用最为广泛的盾构机。
- According to the heat balance principle,the boiler thermal calculation model based on the on-line operating data is presented. 运用热平衡基本原理，建立了基于在线监测数据的热力计算模型。
- In visible experiment, the time of pressure balance decrease with the initial pressure of PRZ and temperature of CMT. 在可视化实验中随着PRZ初始压力的增加，以及CMT初始温度的增加，压力平衡响应时间减小。
- Tecsis pressure balances meet extremely exacting requirements. 我们tecsis所提供的压力秤,正是能完全满足这一要求的产品。
- Using homogeneous balance principle (HBP) and with the aid of Mathematica, the new exact solutions to Benny equation are obtained, which modifies and perfects the known results. 利用齐次平衡法,借助计算机代数系统Mathematica,得到了Benney方程新的显式精确解,修正和完善了已有文献给出的结果。
- Using the harmonic balance principle and the Newton-Raphson iteration method the thesis proposed a very efficient algorithm to solving the steady state problem of such system. 该模型可以看作是广义的Duffing方程组．利用谐波平衡原理及牛顿 迭 法给出了一般求解方法，在非线性电路计算方面有所突破。
- Pulsation dampener can be widely used in pipeline, drilling exploration equipment, pressure balance or pulsation dampening of reciprocating pump. 空气包（脉动缓冲器）可广泛用于管路、钻井勘探设备、往复泵的压力平衡或脉动缓冲。
- Features: the active transmission of the machine adapts balance principle of double active shaft, automatic cycle lubricating and air cooling with multi-pipe screen. 特点：该机主传动采用双主轴动平衡原理，自动循环润滑，多管网空冷。
- The high and low pressure balance valves on the pressure system adopt the new electric-hydro complex control on-off vales. 压力平衡系统的高、低压平衡阀均采用新研制的电液复合控制开关阀。
- When the pressure balance valve before and after the start smaller than the smallest pressure spring are not compressed, the largest circulation. 当平衡阀前后压差小于最小启动压差是弹簧未被压缩，流通面积最大。
- The relation of pressure balance must be kept properly in a circulation loop for keeping a fluidized-bed unit in working order. 为保证流化床装置正常运行,循环回路必须有一个适宜的压力平衡关系。
- A pressure balancing bellows section is installed above the top elbow. 压力补偿波纹管安装在顶部弯管上。
- This paper advances the semantic balance principle and tries to go further into the regularities that double-syllabled onomalopoeic words choose different types of reiterative syllable. 文章提出汉语叠音词语义平衡性原则，尝试探讨汉语双音节象声词生成叠音词的规律。
- The demonstration is also useful to illustrate the concepts of Drilling Mud, Blowout Prevention, Hydrostatic Pressure, Pressure Balance, Gas Compressibility and Density. 该演示对于阐明钻井液、井喷预防措施、流体静压力、压力平衡、密度等概念也很有用。
- Its mortgages must be financed through the issuing of bonds that adhere to the “balance principle”: the maturity and cashflows of the bonds must match those of the underlying loans almost perfectly. 其房产抵押贷款必须遵守“平衡原则”，通过发行债券来融资：债券到期的现金流出必须和同期房贷还款的现金流入几乎完全吻合。
- Pressure balance system is used to balance lateral water pressure outside reinforced concrete of the air cushion surge chamber and air pressure in the surge chamber . 同时,采用平压系统平衡气室钢筋混凝土外侧水压力和气室气体压力。
