The utility model has the advantages of compact structure, long service life, big driving torque and small loss of driving power and small maintenance ratio and can realize the replacement of gears.
本实用新型具有结构紧凑、使用寿命长、传动扭矩大且传动功率损失小的优点，它可以实现挡位的更换，维修率小。
Maintenance of continues low level nitrate with sufficient supply of phosphate, namely low N:P ratio, may facilitate the growth of Alexandrium tamarense.
维持培养液中适当低的氮水平，并保证足够量的磷供应即较低的氮磷比是促进塔玛亚历山大藻生长的重要原因。
The ratio of the maintenance costs in the power costs is increasing.
维修费用占电力成本的比例也不断提高。
Simple structure, convenient using and maintenance, steady performance, low operation cost and high crushing ratio.
结构简单，便于使用和维护，性能稳定，运营成本低，破碎比大。
Furthermore, the system has the features of convenient operation and maintenance, high reliability, better expansibility and very high ratio of performance to price.
系统运行维护方便、可靠性高、并且有着良好的可扩展性和很高的性能价格比。
The series Jaw Crusher features of great breaking ratio, uniform particle sizes, rational construction, reliable operation, easy maintenance and effective cost.
该系列颚式破碎机具有破碎比大、产品粒度均匀、结构简单、工作可靠、维修简便、运营费用经济等特点。
This device can automatically finish the mixing, and quantitative dispensing in whole process, and the ratio of accurate mixing and simple maintenance.
此设备可自动完成配比、混合、和定量吐出全过程，且配比准确，混合均匀，维护简单。
Considering the price-to-performance ratio, low maintenance requirements, and ease of use of the instrument, the benefit will result in bottom-line improvements for analytical laboratories.
其适宜的性价比、较低的维护需求和易于使用等优点，将从根本上改进分析实验室。
It is suggested that when formation pressure is lower than dewpoint pressure, circulating gas injection with maintenance of pressure can be used to enhance the recovery ratio of condensate.
建议当地层压力低于露点压力时，采用保持压力循环注气开采，可提高凝析油的回收率。
The instruments sale center of the company analyses measurement error to their instruments, price performance ratio, feasibility, maintenance level, etc. for customers.
本公司仪器销售中心为客户分析仪器的测量误差，性价比，可操作性，维护难易等。
The ratio of corrective to preventive maintenance is high relative to best performing NPPs of similar design…
的比例相对而言高于设计相似且实绩最佳的核电厂。
The ratio of corrective to preventive maintenance is high relative to best performing NPPs of similar design…
的比例相对而言高于设计相似且实绩最佳的核电厂。
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