像奶牛一样，他们的消化系统具有多腔室，并含有一个用于代谢并分解植物的腔室。
Like cows, they have multiple compartments in their digestive tracts, including one that metabolizes plant matter to break it down.
双头螺杆泵比单头螺杆泵工作腔室多，泄漏少，泵的排量大，效率高。
The twin screw pump is of the properties of less leakage, big displacement and effectivity.
研究目的：提高对结核性多浆膜腔积液临床、实验室检查、诊断和鉴别诊断的认识。
ObjectiveTo have a better understanding of the clinical and laboratory examination characteristics of tuberculous polyserous effusions, and improve the ability to make a correct diagnosis.
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