查询词典 efficiency bar

To solve the issue, sorting grid was developed to separate catch effectively by species retained in non-selective codends in trawl fisheries. In this paper, the separating efficiency of sorting grid of different bar spacings (15, 20, and 25mm) for three-lined tongue sole Cynoglossus abbreviatus, little yellow croaker Pseudosciaena polyactis, and spinyhead croaker Collichthys lucida was analyzed in sea trials carried out in Lvsi Fishing Ground in the SELECT model.

刚性栅栏是实现拖网渔具种类选择性捕捞的主要装置，本文根据在吕四渔场开展刚性栅栏海上生产试验，结合SELECT模型分析不同栅条间距（15、20和25mm）的刚性栅栏对短吻舌鳎、小黄鱼和棘头梅童鱼的分隔效率。

At last, the efficiency of method is illustrated with fuzzy optimal design of a three-bar truss for minimum weight and minimum deflection.

最后用一个三杆桁架的最小重量与变形的模糊多目标优化设计问题证明了该方法的正确性。

Based on the practice of the use of φ95mm subsurface sucker rod pump in Shengtuo Oilfield in recent years, the causes of the failure of the pump are analyzed, and relevant precautions are put forward:(1)selecting oil wells with sufficient fluid supply for pumping;(2)under the condition of the pump efficiency being the same, the submergence depth of the pump being somewhat larger than that of the small pump, and 450～500m being feasible;(3)adopting Grade H ultrahigh-strength rod string and fixing a sinker bar at the bottom of the rod string;(4)selecting long stroke and low pumping speed, and more than 5m stroke and less than 6min-1 pumping speed being recommended;(5)adopting zirconium oxide valve ball and seat ＋ spray welded plunger ＋ nitrided barrel.

根据胜坨油田近几年采用φ95mm有杆抽油泵提液的实践，分析了造成这种抽油泵失效的原因，包括与其配套的脱节器失效、抽油杆断脱、泵漏、电动机不配套和生产管理不善等。为增强泵的提液能力和工作可靠性，提出5 项预防措施：(1)选择有充足供液能力的油井；(2)在保持相同泵效的情况下，泵的沉没度应略大于小泵，推荐按450～500m设计；(3)采用H级超高强度抽油杆柱，并在杆柱底部配置一定重量的加重杆；(4)采用长冲程、低冲次的参数匹配，推荐光杆冲程大于5m，冲次小于6min-1；(5)为提高泵筒、活塞和阀座的防腐耐磨性，推荐采用&氧化锆阀球和阀座+喷焊柱塞+氮化泵筒&的结构形式。

The containment of heat and transfer of maximum heat to the T-bar permits a substantial improvement in thermal efficiency and a substantial reduction of power consumption.

热的保持和对T型杆最大的热传导允许热效率的很大改善和大大减小功率消耗。T型杆的加热边缘用容易替换的特氟隆涂覆的加热槽覆盖。

By three-dimensional linear standing wave,the wave propagation over a bar of scheldt flume experiment carried at Delft hydraulics and tidal current field simulation of waters of between Denmark and Sweden etc example,the model is verified to have advantages such as stability, high efficiency etc,and proved suitable for the simulation both water body of large range and long period.

最后通过三维线性驻波、Delft水力学中Scheldt水槽实验的周期性入射波通过淹没潜堤的传播问题以及连接丹麦和瑞典间海域的潮流场模拟等算例，从多方面验证了模型具有稳定、实用、高效、灵活等的优点，不但能对短波问题进行精确成功的模拟，而且也适合对大范围的水体进行长时段的模拟。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。