我们现在大量求购plain tube（真空采血管），具体规格要求如下： 材料：聚丙烯 或者 聚苯乙烯 matt标签（包括有效期和血容量指示），长度至少4cm，红或白推进式的帽或塞子；...
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plain tube carburetor 简单管式汽化器
plain tube bank 光管束
plain tube lancing 普通中空氧矛切割
coiled plain tube 平滑盘管
plain tube economizer 光管省煤器
distilling tube plain 无球分馏管
plain boiler tube 普通锅炉管
plain capillary tube 扁平毛细管
For HCFC22, the enhancement of condensation heat transfer outside two kinds of enhanced tubes versus the plain tube is larger than that for R407C.
对于所试验的两种强化管，HCFC22的管外冷凝换热系数的强化效果比R407C更明显。
Therefore, using steel spirally fluted tube replacing copper plain tube in HP preheater can be adopted for the boiler feedwater system without copper.
因此，可以采用钢质螺旋槽管替代低压加热器中的铜光滑管，实现锅炉给水系统无铜化运行的要求。
The performance and hysteresis of boiling heat transfer of T-tube with different opening, low fin tube, and two kind of plain tubes have been studied experimentally.
本文报道了几种不同平均开口度的T管、低肋管和光管的沸腾传热性能及沸腾滞后现象。
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