由于其出色的部分负荷效率，多压缩机机组主要应用于的场合为大排量中高压活塞式空压机应用领域。
Because of its excellent part load efficiency, many compressor unit is used mainly in the occasions for large displacement in high pressure piston compressor applications.
首先根据液压活塞式混凝土泵的工作原理，阐述了混凝土泵排量的基本数学模型，指出模型中的实时泵送效率是解决问题的关键。
The basic mathematic model of the output of hydraulic piston concrete pump was described in terms of its working principle, the influence on real-time pumping efficiency was analyzed.
大排量泵抽式地层测试器以获取流体样品和地层静压为主。
High pumping rate formation tester is mainly used to get fluid sample and reservoir static pressure.
根据建立的函数关系式，可直接计算泵的容积效率和所需的泵的体积排量，或迭代求出地面产液量。
Based on the established functional relation, the V_e and the required P_d can be calculated directly, or the total liquid production rate at surface can be calculated indirectly.
一种传动轴式小排量正三轮摩托车，属以载客为主的机动车。
The utility model relates to a transmission shaft and small exhaust amount positive motor tricycle, belonging to an automobile mainly for carrying passengers.
一种传动轴式小排量正三轮摩托车，属以载客为主的机动车。
The utility model relates to a transmission shaft and small exhaust amount positive motor tricycle, belonging to an automobile mainly for carrying passengers.
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