Supplied with a full range of auxiliary weights, specimen holders, abrasive wheels, wheel refacer and vacuum unit.

配有全套辅助砝码，试样夹，磨擦轮，真空装置，膜式控制键盘及电子计数器。

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With increasing acid value, density, salt and sulfur in Liaohe Crude, The HCI-H2SO4-H2O corrosion in overhead condensing system of atmospheric-vacuum unit was deteriorating.

辽河原油逐年来酸值增高、密度变大、含盐和含硫量有所增加，常减压塔顶冷凝冷却系统的“HCI - H_2S - H_2O”腐蚀日趋严重。

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Strong self-suction pump is a kind of mechanical self-suction pump with unique vacuum unit. It can discharge completely air of suction side making running conditions for the pump.

强自吸泵为机械式自吸泵，具有独特的吸真空装置，可将泵的吸入侧空气排净，达到泵正常运转的条件。

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The solution was a vacuum cap that sits over the whole unit, much like the glass globe surrounding the tungsten filament in a flashlight bulb.

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