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This paper determines the motion of lower rocker arm in valve gear by the dimension of cam mechanism and derives the characteristics of equivalent cam,assuming that the rocker arm ratio varies according to the camshaft angular displacement while the push rod and both the upper and lower rocker arms are in motion.

本文根据凸轮机构的几何尺寸确定配气机构下摇臂的运动，并且考虑上下摇臂及推杆的运动，将摇臂比看作是随凸轮转角变化的变量，从而导出当量凸轮的运动规律。

Hold the lower valve rod, place hydrant seat into lower barrel until the bottom contacts drain ring.

用双手握住下阀杆，把阀座放入地下埋管，直到底部与放水环接触为止。

By analyzing the forming process to engine bracket lower plate , and introduced the design of bending die,some measures to control spring back were extracted, the spring back problem of engine bracket lower plate was solved.

通过对发动机支架下板成形工艺的分析及其弯曲模结构的介绍，总结了几种控制回弹的措施，解决了发动机支架下板回弹难以解决的问题。

The lower apparent resistivity of geothermal area is the result of water and the difference of resistivity between the geothermal area and wall rocks can be detected by using passive SLF electromagnetic explorer, and then the interface between the geothermal area and cap rock and the depth of the area of lower resistivity are derived.

分析了深部地热资源勘察中的地球物理电磁法应用现状，阐明了被动式超低频电磁法在深部地热资源勘察中的可用性和优势；重点论述了被动式超低频电磁法在深部地热资源勘察中的探测机理。

Higher pulmonary vascular resistance, higher heart rate, lower cardiac index and lower carbon monoxide diffusion transfer were associated with shorter survival.

高肺血管阻力，高心率，低心脏指数，低一氧化碳扩散均与生存期减少有关。

Rotational modes are independent of the transverse support stiffnesses of the carrier, ring gear, and sun gear. Translation modes are similarly independent of the rotational support stiffnesses. Large contact ratio do not mean lower mesh force. If either the number of sun or ring gear is not multiple of planet gear, system will run effectively, with lower impaction of tooth mesh in and out.

研究表明：扭转支撑刚度的变化影响系统的转动模态，径向支撑刚度的变化影响系统的位移模态；齿轮间重合度大并不等于轮齿间的受力情况好；行星轮与内齿圈齿数不为行星轮个数的整数被时，轮齿的啮入、啮出对系统的冲击小，系统的效率高。

The activity of SOD increased under lower salt concentration and then maintain steady with increasing salt concentration, whereas that of CAT decreased under lower salt concentration and then increased quickly with increasing salt concentration.

结果表明：随盐浓度的增加，海滨锦葵叶片丙二醛的变化呈现出先高后低的趋势；超氧阴离子自由基的产生速率急剧增加，然后迅速减少；显示出在高盐胁迫下海滨锦葵的叶片膜脂过氧化程度得到了有效的抑制。

Close correlation was also found between the SOD activity and the cell density and substance accumulation. When SOD activity is higher or lower than 0.710×10^8 cells^(-1)min^(-1), the cell density and accumulation of 13-carotene and protein were lower. When SOD activity reached 0.710×10^8 cells^(-1) min^(-1), the cell density, and accumulation of β-carotene and protein were the highest.

盐藻SOD活性与细胞密度及物质积累关系密切：在SOD活性为0.710×10^8 cells^(-1)min^(-1)左右时，盐藻细胞密度、β-胡萝卜素和蛋白质的积累量都最高，而在SOD活性较低或较高时，盐藻细胞密度、β-胡萝卜素和蛋白质的积累量都较低。

They can lower your monthly repayments by spreading them over a longer period of time, and by charging you a lower interest rate.

它们可以降低你的每月还款散布在一段较长的时间，和你的收费较低的利率。

When a potential client discovers you're charging a lower rate than standard, they often feel they will receive a quality of services that is also lower.

当你发现潜在客户收取低于标准他们常常觉得他们将分别获得这也是服务质量低下。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。