wheel n. 1.轮,车轮;轮状物。 2.〔口语〕脚踏车;【造船】舱轮;(汽车的)方向盘,驾驶盘;(制陶)转盘;纺车;轮转焰火;【历史】车磔的刑车;〔美俚〕〔pl.〕汽车。 3.旋转;【军事】迂回(运动)。 4.〔常 pl.〕原动力;机构。 5.大人物,红人。 6.〔美俚〕银元;〔pl.〕重要匪徒;〔pl.〕腿。 7.〔美剧〕巡回演出,联营剧场。 the Fortune's wheel 命运。 the wheel of birds 一群鸟的旋回飞翔。 the wheels of government 政府机构。 the wheels of life 人体的机能。 a wheel within wheels [a wheel] = wheels within wheels. at the next turn of the wheel 下次遇机会时,下次运气有所改变时。 at the wheel 掌着舵的;掌握着大权的,担任着领导[管理]工作的。 break a butterfly [fly] on the wheel 杀鸡用牛刀,小题大作。 break sb. on the wheel 处车磔刑。 go on wheels 顺利进行。 keep the cart on the wheels 孜孜不倦地进行工作。 on wheels 1. 用车。 2. 轮子动着;顺利,顺畅。 put a spoke in sb.'s wheel 妨碍某人。 run on wheels = go on wheels. the fifth wheel of a coach [waggon ] 多余的东西,蛇足。 the turn of the wheel 命运的转变。 wheel of life 1. 【宗教】轮回。 2. 万花筒。 have wheels in the head 〔美国〕发疯,有神经病。 wheels within wheels 复杂的机构;复杂的事情;神秘复杂的原因[过程]。 vt. 1.推动,拉动,开动(车子);用车子运;装车轮于。 2.旋转,转动;使转变方向。 vi. 1.轮转,旋转;转变方向。 2.〔口语〕骑脚踏车(等)。 wheel out the table 把(有脚轮的)桌子推出来。 wheel round 转身。 Right [Left] wheel! 【军事】右[左]转弯走! wheel and deal 〔美俚〕不受一切束缚地独断独行;牢牢地控制,掌握支配权。
Based on the imported turbocharger vtc254 which is in operation , considering the high altitude in the west as well as continuously speed - raising need and the characteristic of our railway diesel locomotive , in this paper 16v280 diesel engine turbocharger , especially the compressor is discussed . for example , through calculation on the match of turbocharger and diesel engine , a brand - new technology for compressor wheel is introduced 本课题是以目前运营中的引进增压器vtc254为基础,针对我国铁路内燃机车的特点,为解决西部高原内燃机增压的需要和我国铁路机车不断提速的需要,对我国目前的主营机型16v280柴油机匹配的增压器,特别是对压气机进行研究。
This new technology changes from the traditional method by which the induced and compressor wheel separately are designed and produced to a new one by which the one - piece compressor is designed . on the basis of this new technology and the optimum blade profile , the performance of both the compressor and the turbocharger is largely improved . through the heating power calculation of the compressor , the analysis of the surge and the block of the compressor , the test - bed performance test of the turbocharger , the matching test of turbocharger and diesel engine , the propulsion test of the turbocharger on plateau condition , it is proved that the newly - designed compressor not only has high efficiency , but also improves the flow distribution in the high efficiency area so that the propulsion line can run through the high efficiency area 主要内容包括:提出一种全新的压气机叶轮技术和概念,这种技术将传统的导风轮和压气机分开设计、单独加工改为整体设计、整体加工的单体叶轮;从增压器与柴油机配机计算所得出的基本参数出发,通过对压气机进行热力计算,确定压气机的基本结构参数;再对叶型以及叶轮轮廓与叶轮罩壳的配合间隙进行优化,对新设计的压气机进行喘振和堵塞分析;通过增压器平台性能试验,验证了新设计的压气机的性能水平得到了较大的提高,达到了提高增压器的整体性能水平的目的;通过增压器与柴油机配机试验、以及增压器用于高原条件下的牵引试验,验证了新设计的压气机不但具有高效率,还改善了高效率区的流量分布,使牵引特性线贯穿高效率区。