查询词典 piston

An instrument that measures the outer profile parameters of piston rings such as conical rings, tubbish rings by scanning is introduced.

介绍一种采用扫描方式测量锥面环、桶面环等活塞环外圆轮廓参数的测量仪。

Contains the source of power piston engine, turboprop engines, jet engines, turbofan engine, or rocket engines and so on.

动力的来源包含活塞发动机、涡轮螺旋桨发动机、喷射发动机、涡轮风扇发动机或火箭发动机等等。

"In the two-cycle engine, the piston acts as a valve, clearing valve port s in the cylinder wall as it nears BDC."

在二行程发动机中，活塞起到阀门的作用，当活塞接近下止点时，使气缸壁上的进排气口打开。

POWER PLANT: Two 48.4kW Rotax 582 UL two-cycle, two-stroke, liquid-cooled piston engines.

电厂：两个48.4kW罗塔克斯582 UL认证两个周期，二冲程，水冷活塞发动机。

"In the two- stroke -cycle, or two-cycle, engine, the intake and compression stroke s and the power and exhaust stroke s are in a sense combined. This permits the engine to produce a power stroke every two piston stroke s, or every crankshaft rotation."

在二行程发动机中，进气和压缩行以及作功和排气行分别合并在一起的，这使得二行程发动机每两个行程，即曲轴旋转一周，就完成一次工作循环。

"In the two-stroke-cycle, or two-cycle, engine, the intake and compression strokes and the power and exhaust strokes are in a sense combined. This permits the engine to produce a power stroke every two piston strokes, or every crankshaft rotation."

在二行程发动机中，进气和压缩行以及作功和排气行分别合并在一起的，这使得二行程发动机每两个行程，即曲轴旋转一周，就完成一次工作循环。

So this paper is important to design the whole structure and improve performance of the novel two-stroke cycle micro free-piston swing engine.

因此，本课题的研究工作对新型二冲程微型摆式内燃机的整体结构设计与性能改进具有十分重要的意义。

Meshes are built which mainly are uncontinuous, complete unconstructed hexahedron, including the moving mesh that is necessary for simulating the movement of valve and piston.

网格采用非连续的、完全非结构化的六面体，另外包含气门和活塞运动所需要的动网格。

The distribution of gear's contact stress, root stress, and contact engagement line in the engagement situation of gear pairs, were obtained on the base of explicit integration method. 3. Adopting the method of system matrix, the torsional vibration differential equation of general shafting was gained. The simple harmonic forms of excitation torque under the normal combustion or piston flameout of in-line engine and v-type engine were analysed. The decoupled algorithm of free vibration and forced vibration and the solution to the vibration damper's energy of resistance and the off-resonance calculation were studied. The sensitivity formulations of the natural frequency and vibration mode to physical parameters of system were derived by solving the eigenvalue problem. These sensitivity formulations provided the theoretical base for the dynamic modification of structure.

运用系统矩阵法建立了轴系的扭振微分方程，并对直列和V型发动机在正常发火和气缸熄火工况下的激振力矩进行了详细的简谐分析；基于精确方法推导了自由振动和强迫振动的解耦算法，给出了能量法计算中的减振器阻尼功求解和非共振计算方法；并研究了曲轴系扭振非线性分析中的变惯量问题，得到了单缸转动惯量的精确求解公式以及变惯量和固有频率的关系式；最后，从特征方程和振型正交性出发，推导了固有频率和振型对轴系转动惯量和刚度等物理参数的灵敏度，为扭振系统的结构动力学修改提供了理论基础。

It is the first joint venture producing roots vacuum pump and rotary piston vacuum pump in China.

我公 司是国内第一家合资生产罗茨真空泵和滑阀真空泵的企业。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。