冲程

Related to the issue above, large excursion woofers often have poor bass extension and require active EQ to get a reasonable bass response.

巨大冲程的低音喇叭通常有很差的低频延伸，需要有源EQ均衡电路来获得合理的低频响应。

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。

The characteristics of the 1402cc, DOHC, fuel injected, 4-cylinder, 4-stroke, oil-cooled engine make the power readily accessible.

这颗1402 c.c。的DOHC，喷射供油，四缸，四冲程的油冷引擎，让这部车的动力源源不绝。

By analysising the datum in different prestressing force of piston spring shows that raising the prestressing force of piston spring only have a small influence on stroke time to keep the other paramters in costant, but the back stroke time will be decreased and the frequency, the percussive energy and the hydraulic efficiency will be increased rapidly.

对不同锤簧予压力下液动冲击器性能变化的试验数据处理、分析得出：在保持液动冲击器的其它参数一定时，增加锤簧予压力对冲程时间影响不大，但可以大大缩短返程时间，大幅度提高冲击频率、冲击功和液动冲击器的水力利用效率，增加锤簧的予压力是提高液动冲击器性能的一种有效手段。

Since the rotary plunger pump piston at each stroke can randomly rotate constantly change with the pump plunger cylinder contact surface, so that circular plunger gradually wear uniform or scaling at the same time, sand from the plunger and pump barrel between discharge and resolved accumulation Materials abrasion caused by wear and serious positioning rod release.

自旋转柱塞抽油泵可使柱塞在每一冲程中随机转动，不断地改变柱塞与泵筒的接触面，使柱塞圆周逐渐均匀磨损的同时将砂粒或结垢从柱塞与泵筒之间排出，解决了磨蚀材料聚集所引起的严重定位磨损及杆柱脱扣

Since the rotary plunger pump piston at each stroke can randomly rotate constantly change with the pump plunger cylinder contact surface, so that circular plunger gradually wear uniform or scaling at the same time, sand from the plunger and pump barrel between discharge and resolved accumulation Materials abrasion caused by wear and serious positioning rod release.

自旋转柱塞抽油泵可以使柱塞在每冲程中随机转一下，不停地转变柱塞与泵筒的接触面，使柱塞圆周逐渐匀称磨耗的同时将砂粒或结垢从柱塞与泵筒之间排出，解决了磨蚀材料聚集所导致的紧张定位磨耗及杆柱脱扣。

Large excursion woofers often have more mechanical operating noise - slapping voice coil leads, and air noise from high pressure escaping from the pole piece vent

巨大冲程的低音喇叭通常有大的机械噪声-噪声来之于高速运动的音圈，高压的空气从管道边缘被释放。

MWM engine add an exhaust port at a four-stroke engine cylinder wall, and it be controlled to opening or close by a valve, this structure can make the engine has different working mode by different valve working together.

MWM发动机在普通四冲程发动机的气缸侧壁增加了一个排气口，且由气门控制其开闭，通过处于不同位置气门的配合工作，从而实现其各种工作模式和工作过程。

"The size, weight, and cost of the engine per horsepower are therefore less, and two-stroke-cycle engines are used in motorcycle s and smaller machines (e.g., lawnmowers and power rakes)."

因此，每马力所要求的机器尺寸、重量和价格成本也就降低了，所以二冲程循环发动机多用于摩托车和小型机器。

The displacement wars continue with Arctic Cat taking top honors for the year with their new ThunderCat 1000, twin-cylinder four-stroke sport/utility model.

北极猫的最新车型ThunderCat 1000获得年度最高奖，此车是双缸四冲程运动/实用款。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。