Research on experimental device of dynamical mechanic efficiency 动态机械效率测试装置的研制
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Coefficient of mechanical efficiency 机械效率系数
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Acoustic mechanical efficiency 声机械效率
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The removal of the iron teeth in the armature leaves more room for armature copper , which lowers the losses and improves machine efficiency 在电枢中去除铁刷将会给铜电枢留下更多的空间，从而降低损耗，提高机械效率。
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1driving form : speed - regulate of frequency converter + universal shaft coupling + synchronous belt with high accuracy in synchronism , high in mechanism and guarantee in lifetime of the components 传动型式：变频器调速+万向联轴器+同步带，同步精度高，机械效率高，构件使用寿命保证。
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The study on the ae , which has a history of about 100 years , can be roughly divided into 3 stages , with mechanical efficiency , social efficiency and standard efficiency as its study subjects respectively 第一部分：简要阐述行政效率研究的历史与现状。行政效率的研究经历了约一百年的时间，主要分为机械效率、社会效率和规范效率三个阶段。
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Due to the low mechanical efficiency and long circulating period of the down - charging system of cold bed in bar production line , this paper puts forward the improving project , which adopts ethernet supplemented by dp network , applies the fm350 - 2 advanced counter and suitable maths model and combines the technique of the transducer and hydraulic pressure drive control to realize auto - control 摘要针对棒材生产线上冷床下卸钢系统机械效率低、运行周期长，不能适应快节奏生产的现状，采用以工业以太网为主、 dp网为辅的网络通讯，应用西门子fm350 - 2高速计数器，通过有效的数学计算模型，结合变频器和液压传动控制技术，实现网络自动化控制。
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So it is very important to enhance equipment and lease management , select exactly equipment , use reasonably and maintain in time , so as to improve the rate when equipment are in good condition , and enhance mechanical efficiency , take technological transformation and innovation in time , complete the constructing duty fast and economically , heighten the economic benefit 因此，加强建筑设备租赁设备管理，正确选择设备，合理使用及时维护，从而不断提高设备的完好率、利用率，提高机械效率，并及时地对现有设备进行技术改造和更新，多快好省地完成施工任务和提高企业的经济效益都具有十分重要的意义。
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These characteristics and phenomenons have effect on the quality of gear pump , and it is difficult relatively to research them by theory . at present the research is limited to the phase of examination testing . theoretic research of the characteristics and the phenomenons of polymer gear pump are blank in china when the gear pump feeds the viscous polymer liquid of chemical flow with high temperature and high pressure 齿轮泵除具有流量和容积效率、扭矩和机械效率、功率和总效率等基本特性外，还存在着困油、噪声和气穴等现象，这些特性和现象直接影响齿轮泵的质量，对斜齿齿轮泵的这些特性和现象的理论研究难度较大，目前大多仍局限于实验测试研究阶段，而聚合物齿轮泵在输送化工流程中的高温、高压的粘流态聚合物时特性的理论研究在国内基本还处于空白。
