It is the key study how to make sure the pressure distribution of liquid in the pump barrel and to study the pump valve-ball's movement to improve the systematic efficiency.
对有杆抽油泵泵阀运动规律的研究和确定抽油泵泵阀筒内液体压力的分布是提高抽油机井系统效率研究的关键性课题。
This paper points out that the electrochemical noise obey logarithmic normal distribution and inverse power law, and the electrochemical noise is caused by the systematic complex.
本文首次指出电化学噪声服从对数正态分布与反幂律，它的产生在于系统的复杂性。
For all the specimens, liquid phase separation structures were observed generally by DTEMand a systematic measurement of liquid droplet size distribution was carried out.
用DTEM观察了全部试样的液相分离结构，系统地测量液相小滴的粒度分布。
Nowadays, various problems have existed in water consumption of cities, not only on the systematic, policy and management level, but also on the interest distribution and using water behaviors.
目前中国很多城市的用水，无论是在制度、政策和管理上，还是在利益分配上，抑或是用水行为上，都存在多方面的问题。
The results showed that the systematic control strategy had a more pronounced effect of the energy conservation on distribution lines under the same compensation position and capacity.
计算结果表明，在相同的安装位置和补偿容量下，系统控制策略对配电线路的降损节能效果更显著。
A systematic investigation was made of the aphid populations and their bio-distribution on spring-sown maize plants in 1998~1999 in the suburbs of Chongqing.
对重庆市郊区1998年至1999年春玉米上蚜虫种群的发生情况进行了系统调查。
Necessary Zone 2 will be built as the distribution center of logistics and systematic services for nuclear power construction. the earlier stage of development work is grasping to be carried on.
配套二区将建成核电建设配套服务和物流配送的集散地，前期开发工作正在抓紧进行。
Necessary Zone 2 will be built as the distribution center of logistics and systematic services for nuclear power construction. the earlier stage of development work is grasping to be carried on.
配套二区将建成核电建设配套服务和物流配送的集散地，前期开发工作正在抓紧进行。
应用推荐