tube ring

To improve efficiency and veracity of soil sampling in testing bulk density, the cutting ring method and in situ soil tube method were combined and a multi-segment in situ soil sampler was designed.

为了提高土壤容重测定中土样采集的效率和精准性，将环刀法和原状取土管法结合，进行了分段式原状取土器的研制。

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Adopted power save, shadow-less, flash-less ring-formed bright fluorescent tube has no bad effect to vision.

采用节能，无影，无闪烁环型光亮灯管，不会影响视力。

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Based on the inferior limit theorem of plasticity, the correlated curves of the concrete filled core steel tube and the ring concrete between the moment and the axial force are derived and simplified respectively.

根据塑性理论的下限定理，推导出芯钢管混凝土和节点区环形钢筋混凝土的弯矩轴力相关曲线，并对曲线进行了简化。

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The cylindrical tube of the conical sleeve, which is provided with outer screw threads, is provided with at least one cushion ring and at least one screw nut.

安装在锥形套筒的外螺纹圆筒管上的至少一个垫圈和至少一个螺母。

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Bellows ring by welding seamless pipe or tube forming process.

环形波纹管由无缝管材或焊接管材加工成形.

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In this paper the numerical simulations of detonation wave propagation in a tube with a cavity ring are conducted by solving axis-symmetric Euler equations.

对充满氢氧可燃气体、带扩容腔的正向爆轰驱动的激波风洞进行了数值模拟。

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Study on deformation characteristics of collision region of copper tube with guard ring driven by two head-on colliding detonation waves

爆轰波对碰驱动下加环紫铜圆管对碰区变形特性研究

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The packer and telescopic tube are designed to a whole body and V-shaped inflatable graphite sealing ring is used to form the sealing system, ensuring the sealing performance of.

它将封隔器与伸缩管设计成一体，采用V形膨胀石墨密封圈组成密封系统，确保伸缩管热力伸长时封隔器的密封性。

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