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A new differential pressure flow-meter is developed by using the theory of flow around a circular cylinder.

应用圆柱绕流的基本理论，研制了一种新型绕流管差压流速流量计。

Meter radius of the perfect conducting circular -cylinder is obtained, and it is coincided between the theoretical and experiment results.

取得了与实验结果相吻合的计算结果。

The paper introduces a kind of acoustics principle,and a new method which measuring resonance frequency of the circular saw blades by means of a sound level meter,inorder to provide the reference of testing resonance frequency parameter for all kinds of woodworking cutting tools.

介绍了一种利用声学原理，采用声级计为传感器的木工圆锯片固有频率测量的新方法，以期为各类木工刀具的固有频率参数测试提供借鉴。

The paper introduces a kind of acoustics principle,and a new method which measuring resonance frequency of the circular saw blade s by means of a sound level meter,inorder to provide the reference of testing resonance frequency parameter for all kinds of woodworking cutting tools.

介绍了一种利用声学原理，采用声级计为传感器的木工圆锯片固有频率测量的新方法，以期为各类木工刀具的固有频率参数测试提供借鉴。

By using TCN—AN numerical torsion testing machine, the torque of Cast Iron Materials under pure shearing is measured, and its strain is also measured through XL2101B2 static strain meter, adopting method of whole bridge connection. Based on the above experiment equipments and all the measurement results, method of torsion of circular shaft is designed to measure Elastic Modulus of Cast Iron Materials.

通过 TCN—AN数控扭转试验机测量处于纯剪切状态下铸铁试件的扭矩，采用全桥接线法，使用XL2101B2静态应变仪测量铸铁试件的应变，基于以上两种实验仪器及其测量的结果，发展了圆轴扭转法来测量铸铁材料的弹性模量。

There are two-meter-height battlements in a line outer the circumvallation, covering with many quadrate lookout holes and fire holes for watching and firing.

城墙外沿有两米多高的成排的垛子，垛子上有方形的暸望口和射口，供暸望和射击用。

We did not know what the face had to offer, but to our relief found it very climbable. We were able to link-up class 4 snow and rock ramps. At one point a 20 meter high rock band of loose and vertical rock split these ramps. Liu Yong efficiently surmounted this obstacle and we continued following the ramps up the face to a slightly overhanging snow cornice. I dug my way through the cornice which led onto the glacier.

我们根本不知道正面的路线怎么样，但是过去了以后发现它有希望，能连接4级雪和石头的坡道，顺这些坡道往上爬，其间有一段20米高的很长的岩壁，刘勇有效地超越了这个障碍物，然后我们继续顺正面的坡道到了雪檐，我通过挖掘雪檐就到了后面的冰川。

We did not know what the face had to offer, but to our relief found it very climbable. We were able to link-up class 4 snow and rock ramps. At one point a 20 meter high rock band of loose and vertical rock split these ramps. Liu Yong efficiently surmounted this obstacle and we continued following the ramps up the face to a slightly overhanging snow cornice.

我们根本不知道正面的路线怎么样，但是过去了以后发现它有希望，能连接4级雪和石头的坡道，顺这些坡道往上爬，其间有一段20米高的很长的岩壁，刘勇有效地超越了这个障碍物，然后我们继续顺正面的坡道到了雪檐，我通过挖掘雪檐就到了后面的冰川。

The simple well head assembly newly developed is comprised of protection flange,pup joint,clip,gate valve,tee joint and anti-vibration pressure meter.

研制的简易酸化井口装置由保护法兰、过渡短节、卡箍、闸阀、三通和抗振压力表等组成。

The flow meter can be connected to a control valve to form a closed control loop.

流量计可以连接到一个控制阀，形成一个封闭的控制环路。

I can still vividly recall the impressive scenes you gave. You were among my friends and relatives who accompanied me from my house to the seaport and when the porters were slow to show up, you obligingly carried my suitcase for me.

你对我的种种感人情意，使我记忆犹新，那天你随着我的亲友从家里送我上轮船，搬运工迟迟不来，你毅然替我提着皮箱上船。

St. Nicholas became the patron saint of Russia, where he was famous for his red cape, flowing white beard, and bishop's mitre.

圣尼古拉成了俄罗斯人的守护神，在那里，他以身披红斗篷，留着飘逸的白胡须，戴着主教法冠而闻名。