According to EJ/T 586-91 standard and the customer technique request, we carry on physical characteristic test to the big area of gas-flow proportional counter produced by ourself.
按照EJ／T 586-91标准和客户合同技术要求，对我们自主生产的大面积流气式正比计数管进行了物理性能测试。
The compound tray has no down comer, gas and liquid counter flow through the holes of on the tray.
复合塔板不设降液管，气液同时逆流穿过筛孔。
The compound tray has no down comer, gas and liquid counter flow through the holes of on the tray.
复合塔板不设降液管，气液同时逆流穿过筛孔。
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