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The experimental velocities cover subsonic,transonic and supersonic flows,and the content includes:(1) flow over flat plate,revolution body and wing with riblets surface at zero angle of attack;(2) the effect of pressure gradient,angle of attack and slide angle;(3) the burst characteristics,characteristics of turbulence,the streak structure in the near wall region and the drag reduction mechanism.

内容涉及沟槽面平板、旋成体、机翼等在压、跨、超音速流动情况下的实验研究成果;压力梯度、攻角、侧滑角等的影响;湍流猝发特性、紊动特性、近壁区带条结构的特征及减阻机理等方面的工作。

The results show that eggs dissected from the lateral oviducts may cleave in the culture medium composed of TC - 100, plasma of larvae of its host Ostriniafurnacalis and fetal serum.

通过在体外条件下培养腰带长体茧蜂侧输卵管处解剖得到的脱去滤泡细胞的成熟卵及从寄生早期幼虫血淋巴中获得的初期胚胎,对腰带长体茧蜂卵和胚胎的初期发育进行了初步的研究。

Lower part the vehicles guidance electro-magnet and under the orbital magnet reaction, causes the wheel and the track maintains certain lateral distance, the realization wheel track at the horizontal direction and the vertical direction non-contact support and the non-contact guidance.

在车辆下部的导向电磁铁与轨道磁铁的反作用下,使车轮与轨道保持一定的侧向距离,实现轮轨在水平方向和垂直方向的无接触支撑和无接触导向。

Introduced the analysis and processing of a transformer with three-phase winding of DC resistance imbalanced defect,through further analysis of the after processed DC resistance,believed the transformer still existing the polarity selector"-" side contact deficiency,further on finding out the method of comparing corresponding DC resistance difference rate at each tap has the advantage to detect the polarity selector defect more accurately more sensitively and more directly.

对一台变压器出现三相绕组直流电阻不平衡缺陷的分析和处理情况做了介绍;通过对处理后直流电阻的进一步分析认为,该变压器还存在极性选择开关&-&向侧仍有接触不良方面的缺陷,遂进一步提出,如采用比较各对应分接位置下直流电阻差率的方法能够有更准确、灵敏、直接地发现极性选择器方面缺陷的优点;还提出了测试变压器绕组直流电阻时的几点注意事项。

Under distillation conditions, including a bottoms temperature of greater than about 55 DEG C and less than about 75 DEG C, an overhead or side-cut distillate stream containing a purified propylene oxide is obtained with low yield loss of propylene oxide to propylene glycols and other glycol heavies.

在包括大于大约55℃且小于大约75℃底部温度的蒸馏条件下,得到含有纯环氧丙烷的塔顶馏分流或侧馏分流且具有低的从环氧丙烷转化到丙二醇和其他二醇重质的产率损失。

This puts downward pressure on your liver, which then tugs at the diaphragm and creates a side stitch, according to The Doctors Book of Home Remedies for Men.

根据男性家庭医书的记载,这样的动作会增加肺部的下扯压力,导致肺部隔膜的拉扯而产生侧痛。

The saddle of bearing the weight is equipped on train between roll axletree and swiveling frame, under the train's operation long time later, some parts will be abraded easy, then will affect the train's kinetic capability, so must detect the pivotal parts term.

承载鞍安装在货车的滚动轴承和转向架侧架导框之间,承受和传递着各种载荷,在货车长期运行作用下,某些部位是很容易被磨损的,对车辆的动力学性能会产生较大的影响,因此需要对承载鞍的关键尺寸进行定期检测。

It is widely concerned in fatigue of concrete structures. In this paper, concrete triaxial compression fatigue experiments and tension-compression fatigue experiments with constant confinements in two lateral directions have been carried out using a self-modified loading apparatus. Based on the analysis of the test data, the quantitative principles of concrete fatigue deformation and the calculation method of fatigue strength are determined.

混凝土结构的疲劳是一个广为关注的问题,本文针对这一问题结合国家自然科学基金项目——混凝土多轴变幅疲劳破坏准则(50078010)的研究,利用自制的试验加载装置完成了两向定侧压约束下混凝土三轴受压、三轴拉-压等幅和变幅疲劳试验,对试验结果进行了分析。

A multi-functional mortise lock that can be rapidly converted between different functions without opening the mortise lock case by installing blocking screws that extend through threaded blocking openings in a sidewall of the case and into blocking interference with moving components inside the case.

一种多功能插锁,其可以通过安装阻挡螺钉在不打开插锁外壳的情况下在不同的功能之间快速转换,所述阻挡螺钉延伸穿过外壳侧壁中的带螺纹的阻挡开口并且与外壳内部的移动部件发生阻挡干涉。

Results show that in hover the fuselage normal force and pitching moment are relatively high due to the influence of rotor/wing downwash; and in low speed forward flight, the downwash have strong interaction on the normal force and pitching moment of fuselage due to the big dimension horizontal tail; the effects of downwash on the fuselage rolling and yawing moments are little and the influence on fuselage side force is considerable.

结果表明,悬停时受主机翼高速旋转产生的下洗尾流影响,机身产生了较大的法向力和低头力矩;前飞时下洗尾流对机身的法向力和俯仰力矩有比较严重的干扰,对滚转力矩和偏航力矩干扰较小,对侧向力有一定影响。

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