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By designing and selecting oils that minimised friction between the moving parts of the engine, it is possible to minimise the power and friction losses in an engine.

通过设计和选用适当的润滑油，可以减小发动机活动部件之间的摩擦，就可以降低发动机中的功率和摩擦损失。

Recognising the benefits of multigrade engine oils, since around 1990 the world′s leading engine makers have designed their equipment to function best with multigrade oils.

因为多级粘度发动机油所具有的以上优势，从1990年左右起，世界上最主要的发动机制造商纷纷设计自己的相关发动机，以便能够让多级润滑油发挥最大效力。

Multigrade engine oils became widely available in the 1970s where they combine the benefits of remaining fluid at low temperature s but retaining adequate thickness to protect the engine at operating temperature s.

多级粘度发动机润滑油出现在七十年代，它们在低温下既能保持流动状态，又能够保持适当的稠厚，从而能够在工作温度下对发动机形成有效的保护。

Multigrade engine oils became widely available in the 1970s where they combine the benefits of remaining fluid at low temperatures but retaining adequate thickness to protect the engine at operating temperatures.

多级粘度发动机润滑油出现在七十年代，它们在低温下既能保持流动状态，又能够保持适当的稠厚，从而能够在工作温度下对发动机形成有效的保护。

Benefits of this system were obvious over a conventional twin layout, with only the same frontal area as a single-engined aircraft, the wing left clean of engine nacelles and attendant structures, and no asymmetric pull if one engine cut out.

这样的系统的好处明显超过了传统的双螺旋桨布局形式，他就如同一架具有有相同迎风面积的单引擎飞机。不在机翼下安置发动机舱和辅助结构，就不会因为一台发动机的熄火而产生不对称的推力。

The two-cell, 400-gallon capacity fuel tanks for each engine were located in the aft portion of the engine nacelles and in the adjacent stub-wing sections.

两个细胞， 400加仑的油箱容量为每个引擎均位於在尾部的部分发动机舱和在旁边的存根翼部分。

Simultaneously founding the mechanical modelof the seeder and analyse engine's libration when it was running at 50r/s,42r/s,38r/s,25r/s,7r/s influence on arranging seeds and use damping spring and latex to reduce libration about this part. Analysed the treading and swerving capability of the Paddy direct-seeding machine. Research results indicate: only boat motherboard's front across baffle's angle is 30 degree, the section shape of motherboard is undee, depth of section is 30mm, direct seeding engine stepped resistance and soil is least, turning

研究结果表明：当船底板前横挡板角度为30度、底板截面形状为波浪形、底板截面深度为30mm时，直播机在行走时行走阻力最小，壅土最少，转弯时转弯阻力最小；当发动机38r／s时，发动机对排种盘的振动影响最大，加刚度为100N／mm的减振弹簧或厚度为35mm的橡胶后，排种盘的振动量会大大降低，减振后的振动对排种无重大影响；仿真结果还显示，排种器力学模型、直播机行走、转弯性能和排种性能合理。

The feasibility of utilizing FAI injection system on a 50 cm^3, twostroke motorcycle engine is studied experimentally. Injection directions, injection timing and fueling are studied specially at the small and full throttle opening conditions to clarify their effects on emissions, fuel economy and engine power.

试验研究了FAI直喷系统在50立方公分二冲程摩托车发动机上应用的可行性，着重研究了在小节气门开度和节气门全开条件下，喷油方向、喷油提前角以及喷油量对排放、经济和动力性能的影响。

20Th century 80's, companies have developed 5 series of aero-engine turboprop and licensing micro Dongan Automotive Engine family of products, forming a combination of military and civilian product mix and a new management system.

进入20世纪80年代，公司相继研制开发了涡桨5系列航空发动机和东安牌微型汽车发动机系列产品，形成了军民结合的产品结构和新型管理体制。

The engine on a front wheel drive car is usually mounted sideways in the car with the transaxle tucked under it on the side of the engine facing the rear of the car.

发动机在一个前轮驱动的汽车，通常采取侧身在汽车上与跨桥藏下它放在一边的引擎所面临的汽车尾部。

Finally, the Knight strung a line between two of the monoliths and tied the horses up there.

最后，骑士们在两颗巨石之间拉了一条绳子，将他们的座骑绑在上面。

T7zN/hyS0 The island lies south by east from here.

那个岛位于此地的正南偏东方向。