The mechanical device comprises a rotary drum and a driving mechanism for driving the rotary drum to rotate, wherein the rotary drum is internally provided with a spiral guide plate;
本发明包括一个转筒和带动转筒旋转的驱动机构，转筒内 设有螺旋导板；
The spiral flow in the horizontal pipe can generate the spiral flow to transport sediment according to the way of equipping the guide blade in the middle of the pipe.
前两种排沙方式已经广泛应用于工程实践中，平轴螺旋管流排沙是近年提出的一种节能、高效的输沙方式，目前还处于试验研究阶段。
Objective To discuss the value of Spiral CT in observing the longterm curative effect of percutaneous radiofrequency ablation under ultrasonic guide for hepatic tumor.
目的探讨螺旋CT在观察超声引导经皮穿刺射频消融治疗肝脏肿瘤的长期疗效的价值。
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