热稳定的

Combustion instability in liquid rocket engine is investigated with theoretical analyses, numerical simulations and experiments. Nonlinear science, such as Nonlinear Dynamics, Non- equilibrium Thermodynamics, and Wavelets, is introduced in the studies.Nonlinear oscillation equation of chamber pressure is established.

本文结合非平衡热力学、小波分析、非线性动力学等非线性学科，建立燃烧稳定性理论模型，发展两相喷雾燃烧非定常数值模拟程序，利用激光测粒系统，发动机高频热试系统等测试手段，重点围绕液体推进剂的化学动力学过程，对燃烧不稳定进行了较为系统的理论、仿真和实验研究。

It includes high power high voltage constant-current-charging system, capacitors bank, discharge control system, power supply of preignition for Xe-flashlamps, general control and diagnostic system. The power conditioning system drives flashlamps that pump the SSHCL. Flashlamps are driven by high voltage Silicon Controlled Rectifiers switched, resonant charged, discharge pulse forming network. The system uses microchip and digital circle which is based on CAN-bus for control and diagnostics. Energy diagnosis and thermal management are controlled by computers.

其中大功率高压恒流充电装置采用了L-C串联谐振电路，充电功率大，效率较高；储能装置采用了多节脉冲成形网络，可产生波形良好的强电流放电脉冲；放电控制装置采用高压大功率晶闸管，开关速度快，工作稳定；预燃与触发装置采用了开关电源电路，效率高、功耗小；总控与测量装置采用基于CAN总线的数字电路和单片机技术，控制冷却系统在激光器出光时对脉冲氙灯进行水冷，并对全系统进行控制和状态检测，同时具有过压、过流、过热等保护功能。

At the same time, the effects of thermal conductivity and grid density on the numerical simulation are discussed.

实验结果表明，所设计的热模拟系统工作稳定可靠，可以用于验证传热数学模型的可置信程度。

Results show that ascorbic acid and dehydroascorbic acid of cloudy strawberry juice in the storage process are unstable to the heat treatment; the degradation of ascorbic acid and dehydroascorbic acid accords with first-order dynamic, which indicates that this degeneration dynamic model is logical and effective, and can be used in selection of storing temperature and prediction of storage period at different temperatures.

结果表明：草莓浑浊汁在贮藏过程中还原型维生素C和氧化型维生素C对热不稳定，还原型维生素C和氧化型维生素C降解符合一级反应动力学。经过验证表明该降解动力学模型有效，可用于草莓浑浊汁贮藏温度的选择和预测不同温度下的贮藏期。

The effects of solid content of latex, reaction temperature, the amount of phenylhydrazine and pepegal O on the viscosity-average relative molecular mass M(subscript n of LNR were investigated, and the optimization of these influence factors was conducted by orthogonal test.

以天然橡胶浓缩胶乳为原料，在热氧条件下采用苯肼为催化剂通过化学降解法制备液体天然橡胶，考察了胶乳的总固物质量分数、反应温度、稳定剂平平加O和苯肼用量对LNR黏均相对分子质量M(下标 n的影响，并通过正交实验进行优化。

Up to now, we have treated the stationary temperature field under the influence of lateral changes of thermal conductivities in the underground.

截至目前为止，我们讨论的一直是处于地下热导率侧向变化影响下的稳定温度

This paper has done analysis about the saw blade in first contact and steady incising state by means of theory and limited cell method , and got significative results .

针对热锯机锯片磨损较快，使用寿命过短等主要失效形式，为摸清失效机理，找出预防办法，进行了锯齿初始接触状态和稳定锯切状态下齿尖应力的理论分析和有限元研究，并且得到有意义的结果。

Adjusting the packing 1 Pump packing (1) continue to hand tighten the squeeze cap nut;(2) after opening the pump, adjust the gland nut, this time to allow a little more leakage;(3) slowly tighten the squeeze cap nut, gradually reduce the leak until the leak to an acceptable level;(4) If the disclosure of a sudden stop, should be back to tighten the gland nut, packing re-adjustment in order to prevent overheating;(5) adjust the leakage rate can reach a steady state.

泵用盘根（1）继续用手拧紧压盖螺母；（2）开泵后，调整压盖螺母，此时截止阀允许有稍多的泄漏；（3）缓慢地拧紧压盖螺母，逐渐减少泄漏，直到泄漏达到可接受的程度；（4）如果泄露突然停止，应回拧压盖螺母，重新调节以防止盘根过热；（5）调节泄漏率达到一个稳定状态即可。

E. , when they run under low temperature in winter, the formation of frost on airside heat exchanger surface has become a common problem, which leads to degradation of heating capacity and has effects on its normal running.

主要表现在机组冬季运行时，当空气侧换热器表面结霜时，会减小机组的供热能力并影响其正常工作，常造成机组运行的不稳定，使机组运行中常发生故障，甚至于停机。

Very small amounts of the following: heat-sensitive agents (generally for obtaining thermosensitive rub- ber latexes), cationic surface-active agents (general- ly for obtaining electropositive rubber latexes), an- tioxidants, coagulants, crumbling agents, freeze-re- sisting agents, peptisers, preservatives, stabilizers, viscosity-control agents, or similar special-purpose additives.

微量的下列物质：热敏剂、阳离子表面活性剂、抗氧剂、凝固剂、碎裂剂、抗冻剂、胶溶剂、保存剂、稳定剂、粘度控制剂或类似的特殊用途添加剂。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。