The change of oligomer content was analyzed at static high-pressure state during polyester melt transfer course in screw extruder and pipes.

研究了聚酯熔体在螺杆输送、管道输送过程中及静态高温状态下齐聚物含量的变化。

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These patented exchangers have high heat transfer with low pressure drop because of short flow length.

这些申请专利的换热器由于流长短而具有传热高、压降低的特点。

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Used high-speed video camera visualization method, investigated the subcooled boiling heat transfer and bubble behaviors in narrow rectangular channel in high pressure for the first time.

首次在较高压力下，使用高速摄像手段对垂直向上矩形窄缝流道内的过冷沸腾及汽泡行为进行了可视化观察。

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