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   buses 在 环境科学与资源利用 分类中 的翻译结果: 查询用时:0.143秒
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buses
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  “buses”译为未确定词的双语例句
    Survey of the bacterium of air pollution in buses
    公共汽车内空气中细菌污染的调查
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    The result shows that the weight percentage of superfine particle PM_(2.5 )is 87.28%~96.82% of ambient aerosol PM_(10), and the air-conditioned buses and the main roads have been polluted severely.
    结果表明,环境气溶胶PM10中PM2.5质量百分比为87.28%~96.82%,公交车和主要道路旁的微细颗粒物污染严重.
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    The maximum speed of the whole tested buses is 60 km·h -1 , average speed is 14km·h -1 , while those of buses in the central city of Shanghai are less than 60 km·h -1 and 14 km·h -1 respectively, which basically reflect characteristics of on-road running buses in Shanghai.
    市区公交车平均车行速度14km·h-1,最高车速小于60km·h-1,市区公交车的怠速时间比在25%以上.
短句来源
    The results show that emissions factors of buses and trucks were much higher,especially for PM,which were 14 and 44 times those of passenger cars.
    结果表明:公交车和卡车的排放因子明显较高,特别是颗粒物排放因子,分别为普通轻型车的14倍和44倍.
短句来源
    Analysis of the Harmful Gas in Buses and Effective Purification Ways
    车内有害气体分析和净化的有效途径
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  buses
An adjacent table-based simplified model of distribution networks containing medium voltage buses of a substation is established.
      
We study the basic behaviors of buses using bus route models (BRM) by introducing a special kind of noise induced by impacts of other vehicles.
      
The peak where the maximum velocity of buses exists shrinks in low noise conditions, which is worth the further study.
      
Furthermore, we extend the model to take into consideration more realistic and important parameters, such as the number of passengers, the capacity of buses, and the possibility of overtaking, for performing simulations of the first loop.
      
Suggestions on the choice of the number of buses and the maximum velocity are provided for the practical operation.
      
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The preparation and field-test of the 778-type granular rare-earth catalyst for the treatment of auto exhaust gases have been studied. The alumina supporters with 4-7mm were impregnated with an aqueous solution of RE, Sr, Cu and Zr acetate mixture, and then were calcined in a muffle furnace in air at 800-1000℃ for several hours. In the fleld-test the catalysts were packed in a converter, and was connected to the exhaust end of a Shanghai-type bus which has a 6-cylinder gas engine of the CA-10B liberation...

The preparation and field-test of the 778-type granular rare-earth catalyst for the treatment of auto exhaust gases have been studied. The alumina supporters with 4-7mm were impregnated with an aqueous solution of RE, Sr, Cu and Zr acetate mixture, and then were calcined in a muffle furnace in air at 800-1000℃ for several hours. In the fleld-test the catalysts were packed in a converter, and was connected to the exhaust end of a Shanghai-type bus which has a 6-cylinder gas engine of the CA-10B liberation type. Analysis of the exhaust gases were made continuously during the test period. The removals of CO and HC were 79.2% and 78% respectively for the 53000km driving period. Besides, this converter can also reduce the noice by 3-7 decibel more than that in the exhaust muffler.

本文叙述了778型颗粒状汽车尾气净化稀土催化剂的研究和应用。将φ4—7毫米颗粒状氧化铝载体浸渍于RE、Sr、Cu、Zr的醋酸盐混合物水溶液,在800—1000℃空气气氛下于马弗炉中煅烧数小时。将制得的催化剂装入催化箱,与上海牌公共汽车(解放CA—10B六缸汽油发动机)的出口相连接。在车辆实际运行状况下,连续测定尾气浓度。当行驶53000公里时,CO、HC净化率分别为79.2%、78%。此外,本催化净化器还可比消音器减少噪音3—7分贝。

Through measurements and analyses of noise and vibration inside Type CDK 6964 bus, with loud structure—brone noise and poor insulation property of engine bonnet, the free damping and restricted damping structures were used for noise control. The average noise level inside the bus reduced from 86.4 dB(A) to 73.2 dB (A) at the speed of 60Km/h.

本文以成都客车厂生产的CDK6964型团体客车为对象,通过对车内声、振动特性的测试和分析,针对该车结构声严重,发动机罩壳隔声能力差等缺陷,主要采取了自由阻尼和约束阻尼改进结构,使该车车内平均噪声级在60km/h匀速下由原来的86.4dB(A)降至改进后的73.2dB(A),取得显著成效。

Copmound additive can promote the gasfication and catalytic decomposition of the high proportion methanol-gasoline mixed fuel in combustor of auto-engine as well as improve the combustibility of the mixed fuel.Standard test for engine and 10 thousand kilometers driving test had been taken in Dongfeng EQ140 truck; Big bus,and Bj212 Beijing jeep. This high proportion methanol-gasaline mixed fuel is proved to be satisfying with its cold starting ability,motive force and economy.

在高比例甲醇汽油里加入复合添加剂,促使甲醇汽油在汽车发动机汽缸里的雾化和催化分解,以改善燃烧性,经过没有专门改装过的东风EQ140型汽车发动机的台架试验,东风EQ140型载货汽车、大客车和北京BJ212型吉普车一万多公里道路行驶试验,在冷起动性、动力性和燃料经济性等方面,获得了满意的实验效果。

 
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