By the derivation, calculation and illustration it is testified that the that of stroke, transmission efficiency, linearity and life time meet the design requirements.
通过推导计算与实例证明，该驴头的行程、传动效率、线性度和寿命都满足设计要求。
The application of vapor-liquid reseparator in the main return tube can effectively decrease the frequency of wet stroke and rapidly handle it and thus increase refrigerating efficiency.
采用在回汽总管上设置汽液再分离器，可以有效的减少湿冲程次数并能快速处理湿冲程现象，提高制冷效率。
This pumping model is suitable for enhancing the effective stroke and efficiency of pumping system and reducing the consumption of energy.
该模式有利于提高泵的有效冲程及系统效率，降低能耗。
This new type Stroke Unit with characteristics of Traditional Chinese Medicine will embody the efficiency and effectiveness of Stroke Unit to a large extent.
传统中医药疗法融入的卒中单元将使卒中单元的作用更加突出，更能体现卒中单元的效率和有效性。
It introduces some advanced technologies which increase the charging efficiency, such as the variable length of the intake duct, the variable valve stroke, the variable valve timing and so on.
介绍了可变进气道长度、可变气门升程及可变气门定时等提高充气效率的先进技术。
The shearing stroke can be adjusted at will, which raise the working efficiency and realize the function of partition cutting.
剪切行程任意调整，提高了工作效率，又可实现分段剪切功能。
The cylinder chain lower super long stroke pumping unit is a kind of up to date and high efficiency equipment.
圆柱链低矮式超长冲程抽油机是一种新型高效有杆采油设备。
The calculating formulas for the power of single stroke, utilization efficiency of energy and frequency of strokes are derived from the energy equation of the reciprocating pump.
并根据往复泵的能量方程推导了液动冲击器的单次冲击功、能量利用率和冲击频率的计算公式，并利用实测数据进行了验证。
Due to structure needed, Anti-impact stroke is one of the important factors that have great influence on the pump efficiency of high-gas-contained oil well.
由于结构需要，抽油泵的防冲距是高含气井中影响泵效的重要因素之一。
Due to structure needed, Anti-impact stroke is one of the important factors that have great influence on the pump efficiency of high-gas-contained oil well.
由于结构需要，抽油泵的防冲距是高含气井中影响泵效的重要因素之一。
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