栓

Pintle controlled solid propulsion is one approach to achieving this goal.

本文以喉栓变推力发动机的技术发展为需求背景，开展了喉栓变推力发动机的原理试验研究。

Under different actuating velocity and free volume of the throat pintle,all the parameters in the flow field were analyzed.

喉栓型面无疑是各种影响因素中关键因素之一，同时对喉栓型面进行优化及瞬态流场的计算。

The experimental system of non-coaxial pintle motor was established including pintle motor, driving system, measurement and control system.

研制了非同轴式喉栓变推力发动机试验系统，开展了喉栓变推力发动机的原理试验。

In the paper, technology actuality and development trend of pintle injector variable thrust rocket engine at home and overseas are summarized.

述了针栓式变推力液体火箭发动机国内外的发展现状与趋势，分解了发展针栓式变推力液体

The internal ballistics prediction method of pintle motor was developed and internal ballistics of test motors were calculated. The experiments show that this prediction mothed is valid in certain degree.

建立了喉栓变推力发动机的内弹道预示方法，开展了喉栓变推力发动机的内弹道预示，与试验的对比表明该方法基本能反映出推力调节过程的主要物理特征。

The breaking of pintle in experiment was finally solved by changing the material and improving the pintle configuration. The main reason of slowly climbing of pressure was found out by analyzing and some validating experiments. A pintle motor test with high combustion temperature propellant was carried also.

对调节比、自由容积和调节方向的影响进行了研究；对试验中出现的喉栓结构破坏的问题，通过改进喉栓结构设计，更换材料最终获得了满意的效果；对推力调节响应特性进行了研究，通过理论分析和验证试验找出了导致调节缓慢的主要原因；还进行高燃温的探索试验。

Plethysmography is a objective,effective and non-invasive technique in the diagnosis and evaluation of treatment effect of DVT.Early

疗效评价是一种客观有效的无创性检测方法，尽早手术取栓加溶栓抗凝综合治疗效果满意。

It then made later into Pli and activate the other molecules. Progress in thrombolytic mechanism of staphylokinase, including the link of it with plaminogen and other factor, the high-level structu...

从葡激酶的溶栓作用机制，包括与纤溶酶等因子的结合作用，葡激酶的高级结构，抗原性等问题以及近年来有关葡激酶作为新一代溶栓的研究进展进行了综述，并指出进一步利用蛋白质工程，对葡激酶进行分子改造的设想。

It is concluded that CO2-HAS is helpful to diagnose and design the therapeutic regimen of portal vein tumor thrombus.

我们认为CO2肝动脉超声造影对确诊门静脉癌栓及门静脉癌栓治疗方案的设计有重要作用。

Insert a plug into one of the tube ends, pour dry sand inside the tube, tap gently tocompact the sand inside and place another plug on the other end, the sand helps to avoid

插入一个栓进管端之一之内，浇注里面的干砂管，逐渐地轻打使装满砂内部而且放另外的一个栓在另一端

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。