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Methods 50 patients undergoing intracardiac surgery were randomly divided into experiment group (on-pump surgery) and control group (off-pump surgery).

选择行心内直视手术患者50例，随机分为实验组和对照组。

So the jet pump optimization designing can improve the efficient of the pump and reduce the consumption of the cycle device.

表明对喷射泵进行优化设计，可以提高泵的工作效率，降低循环装置能量消耗量。

To optimise the pumps' filtration efficiency, Paulaner Brauerei, the largest brewery in Munich , Germany , replaced a traditional hose pump with a Larox peristaltic pump (LPP 40) to feed kieselguhr to a pressure filter which dewaters the spent kieselguhr before disposal.

为了使泵的过滤效果优化，Paulaner Brauerei，德国慕尼黑最大的酿造厂，用Larox的一款蠕动泵(LPP40)取代以前的软管泵来给压力过滤器（在处理前给用过的硅藻土脱水）输送硅藻土。

Acquired Tianjin Construction Machinery Ltd. of natural gas transmission pipeline hydraulic equipment production line project of the country are supporting equipment; Cixi Burgmann Sealing Materials Company W-type high temperature and high pressure spiral wound gasket has been successfully used to HYDROCRACKER up; Dalian Hydraulic Parts Plant Factory and Shanxi Changzhi Hydraulic steering vane pump, are of medium and heavy motor vehicle steering system of the key components, the current annual output of both plants has reached more than 10 million units; Qingdao Kipper sealed the company's new portfolio of large-scale bi-directional sealing and anti-water oil seal are respectively 9 tons FAW Jiefang trucks and tractor trailers 1 matching seals; addition Tianjin Co., Ltd. special precision hydraulic hydrostatic transmission devices and many way valve, Huzhou Miguel pieces of the company's multi-function hydraulic slide-valve, Weihai, a combination of pneumatic components调压阀the air relief valve, Guizhou Feng Yang's hydraulic pump stations and hydraulic valves, such as shift , are well received by users.

天津市精研工程机械传动有限公司的天然气输送管道生产线液压设备是国家西气东输工程的配套设备；慈溪博格曼密封材料公司的高温高压W型缠绕垫片，现已成功地用于加氢裂化装置上；大连液压件厂和山西长治液压件厂的转向叶片泵，是中、重型汽车转向系统中的关键部件，目前两个厂的年产量已达10万台以上；青岛基珀密封公司的新型组合双向密封和大型防泥水油封是分别为一汽解放牌9吨车和一拖拖拉机配套的密封件；此外天津特精液压股份有限公司的静液压传动装置和多路阀、湖州生力液压件公司的多功能滑阀、威海气动元件公司的组合调压阀的空气减压阀、贵州枫阳液压公司的液压泵站和液压换挡阀等，都深受用户的好评。

Through this experiment,it was measured that average diameter of the fundamental frequency light is 2.33 mm in the pattern of ordinary krypton pump,while in he pattern of the laster- diode bar pump the average diameter is only 1.25 mm,and the light field of the later also took on the standard Gaussian distribution,therefore formed the high-bright...

通过实验测量到普通氪灯泵浦方式中基频光的平均直径为2.33 mm，LD 阵列对称泵浦方式中基频光的平均直径仅为1.22 mm，并且呈现标准的高斯分布，形成了高亮度激光输出。实验研究了 Nd：YAG 调 Q 固体激光器的重复频率对 KTP 倍频晶体转换效率的影响。并且，在基频光平均功率11.2 w时，经 KTP 晶体倍频产生5.11W 的532 nm 绿光输出，光-光转换效率达到45.6%。

In order to optimize man-machine interface of the forest fire suppression hand pump and improve the comfortableness and efficiency of working, this paper studied the effects of grip diameter, grip length (the length between the left and right grip) and operating posture of the hand pump on the maximal operating force.

为了优化森林灭火手泵的人机操作界面，提高操作的舒适性和效绩，本文通过最大操作力的测量研究了森林灭火手泵的握持直径、握持长度和握持姿势对操作者操作力的影响。

It knows for certain that different b rand and specification of pump has re levant use limits by analyzing pump s.

通过对各种离心泵的分析比较可知，不同规格型号的离心泵具有相应的适用范围。

This is the same impeller diameter, the vortex pump blades than any other reasons for the high lift pump.

这也是相同叶轮外径情况下，旋涡泵比其它叶片泵扬程高的原因。

After determining the type of pump, it is necessary to consider their economic performance, with particular attention to the lift pump and the power flow and the related selection.

确定水泵类型后，要考虑其经济性能，特别要注意水泵的扬程和流量及其配套动力的选择。

Pump lift pump depends on the size of the structure such as the impeller diameter the size of the blades bend, and so on, the speed.

泵的扬程大小取决于泵的结构如叶轮直径的大小，叶片的弯曲情况等、转速。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。