试验表明，采用排气调谐腔能有效改善发动机在中低速区的性能。
Experimental results show that the exhaust tuning chamber can improve the engine performance at the middle low speed range.
试验结果表明，发动机在高、低速区的最佳进气涡流强度是不同的。
Results show that there are different optimum swirls in different ranges of diesel engine operating condition.
试验结果表明，发动机在高、低速区的最佳进气涡流强度是不同的。
The effects of different intake swirl ratio on the performances and exhaust emissions of diesel engine were investigated based on the experiment data.
塔里木南缘中部存在一显著的低速区，可能与岩浆活动和构造活动较强有关。
A definite low Pn velocity region to the south of Tarim basin is possibly related to strong magma and tectonic activity.
因此在高空低速区航空发动机性能数值模拟必须考虑部件特性雷诺数的影响。
It means that the effects of Reynolds number must be taken into account in turbofan engine performance simulation at high altitude with low flight speed.
研究了线性涡流制动的特性方程，在低速区和高速区分别推导出特性曲线方程。
The paper studies the braking characteristic formula of linear eddy current brakes, and characteristic formula is respectively derived in low speed zone and high speed zone.
结果显示，十二分区方案在动态性能方面，特别是在低速区，要明显优于六分区方案。
The result shows that the dynamic performance of twelve-section control scheme is superior to that of six-section control scheme, especially in the low speed range.
定量比较表明：计算结果与实验结果在过渡点位置、低速区膜厚值大小、零点位置等方面存在差异。
The quantitative analysis shows that the numerical simulation cases are different from the experiment results in the place of the transition point, film thickness at low speed area and the zero point.
当流量在一定范围内变化时，主流区下方均有漩涡低速区或死水区，该区域的大小与流量有关，其位置基本不变。
There is a whirlpool or dead zone below the main water flow zone when the flow changes and the size of which is related to flow but its location basically unchanged.
本文采用加装排气调谐腔的方法，拓宽了摩托车用二冲程汽油机排气系统的调谐转速范围，有效地改善了发动机在中低速区的性能。
By means of the tuning chamber, the tuning speed range of exhaust system is widened. Thus, the two-stroke petrol engine performance at the middle-low speed range can be improved.
从低速度生长的印度大黄到巨大的英国枫树，这一地区的植物用丰富的色彩为冬天的到来做好准备。
From the low-growing Indian rhubarb to the mighty English maples, the plants in this region get ready for the winter with a cornucopia of colors.
她说，青少年怀孕率在每个区都呈下降趋势，而在7区和8区这两个收入水平最低的地区，怀孕率降低速度较慢。
Teen pregnancy rates are declining in every ward, she said, though more slowly in wards 7 and 8, which have the city's lowest income levels.
该装置能增加机车低速运行区的电制动力，满足了“技规”第214条对机车的要求。
The device may increase the electric braking force of the locomotive at low speed range. It fulfills the requirement for locomotive listed in Artical 214 of Railway Technical Specificat on.
穿过此区的折射因低速而有延迟，又由于透射损失而有衰减。
Refractions which transit the zone will be delayed because of low velocity and attenuated because of transmission loss.
结果表明，该模式具有模拟小尺度深凹地形边界层的能力，复环流区封闭、低速和高湍能的特点是造成坑内污染的重要机制。
The results show that the model has capacity of simulating ABL of microscale deep concave terrain, and the close, low velocity and high TKE of the re-ci…
利用二维粒子图像测速系统研究了低速风洞实验中介质阻挡放电等离子体对圆柱绕流尾迹区流场的影响。
Two dimensional particle image velocimetry system is used to investigate effects of the dielectric barrier discharge plasma on the flow field in the wake of circular cylinder cross flow.
在低速环形叶栅实验台上圆弧斜槽处理轮毂相对静子扩压叶栅环的旋转频率对叶栅端壁区流动进行了影响实验探索。
An experiment was made in an annual cascade to explore the unsteady flow mechanism of skewed slot hub treatment in removing flow separation near hub.
地幔底层由具有高地震波速和高密度的D″区和超低速带（ULVZ）组成。
The lowermost mantle layer is above the core mantle boundary (CMB) and composed of D" region and ultra-low velocity zone (ULVZ)."
地热异常、地壳内存在低速层和高导层、强烈地震频繁发生等现象说明，这一地区是现代构造运动的活动区。
The depth of upper mantle high-conductive layer in Chinese mainland is presented and a cause of its formation is given.
低速增长区和过渡区大部分则与相对资源承载力匹配模式的B类地区具有很好的耦合。
The regions of low speed development and the B regions of match mode on the relative carrying capacity of resources have a very good coupling.
地热异常、地壳内存在低速层和高导层、强烈地震频繁发生等现象说明，这一地区是现代构造运动的活动区。
The geothermal anomaly, low velocity zone and high conductivity layer in crust, and frequent occurrence of strong earthquakes show that the study area is an active area of modern tectonization.
地热异常、地壳内存在低速层和高导层、强烈地震频繁发生等现象说明，这一地区是现代构造运动的活动区。
The geothermal anomaly, low velocity zone and high conductivity layer in crust, and frequent occurrence of strong earthquakes show that the study area is an active area of modern tectonization.
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