查询词典 on the air

When I hit the snare drum, the particles on its surface are forced to vibrate. And therefore it causes the air particles to oscillate, which results in the formation of a longitudinal traveling wave. Therefore energy is transmitted in this process. Moreover, according to the Newton's Third Law, the snare drum and my hand are action and reaction pair. Hence, a force which is equal in magnitude but opposite in direction would act on me.

当我用力敲在鼓皮上，其表面粒子产生的振动带动了空气粒子的振动，形成传送能量的行波，并使我的耳膜剧烈震动；而根据牛顿第三定律，鼓皮会施予鼓棍一个方向相反但数值相等的力，并传到我的手中！

Regarding the frequent occurrence of speed stalling of boiler axial flow primary fan in the operation of 600 mw unit in china,the cause of speed stalling was analyzed based on the actual measured data.the problem is mainly caused by primary air pipe resistance property variation,which caused the excessive opening of movable blades,the primary fan is working on the condition of higher wind pressure and lower flow.the approaches to reduce the speed stalling of primary fan and preventive measures are put forwa...

针对目前国内600 mw大容量机组锅炉轴流式一次风机运行中失速事故频繁发生的问题，在了解造成轴流式一次风机失速原理的基础上，根据实测数据对一次风机失速原因进行分析。主要原因为一次风管阻力特性的变化，使一次风机动叶开度过大，一次风机工作点处在高风压区低流量的工况点，是造成一次风机失速的主要原因，提出了运行中减少一次风机失速机率的处理方法及预防措施。

After created qualified grids, discretized physical characteristic, we computed the temperature and velocity field within the standard Model by utilizing CFD techniques. The thesis focuses on the temperature design of supply air, the influence on the platform brought by stopcock wind and local exhaust and the possibility of actualizing the VAV system.

在研究过程中运用CFD模拟的方法，选用标准湍流模型作为物理模型，在优质的网格生成的基础上，对所要研究的物理量进行离散化处理；并就空调送风温度的设定、活塞风、局部排风对站台热环境的影响、全天VAV环控方案实现的可能性等作了详细的理论研究与模拟分析。

The sea above the city is reflected on the shattering white night; fire from the chimney pokes through the cloud, burning the flag red; sky-elevator is ascending towards the sun, trembling; a missile flies a trajectory of no return; the river flows through the secret tunnel in the palace and warms up the buildings along its banks; a lonely knight strolls across the stretched-out villages; angels and madmen are having a duel among the ruins of collapsed buildings and the abandoned fields; the astute businessmen are busying on the container dock; a batwoman is contemplating in the air between skyscrapers; the kind beast has its desire for love realized...

支离破碎的白夜映着城市上空的海，烟囱喷出刺破云端的火焰烫滚着那面火红的旗，通天梯朝着太阳颤抖地运行，飞弹射入不可返回的轨迹，河流趟过宫殿的秘密通道渐渐温暖了两岸的建筑，城中连绵的村庄与寂寞的骑士擦肩而过，天使和疯子在坍塌的楼宇和被遗弃的田垄间决斗，货柜码头那里的精明商人忙碌起来，一个蝙蝠女人在摩天大楼间盘旋沉思，善良的野兽得到了渴望的爱情

The production geology, the mining survey, the productive plan, the production management and so on are main core link of the strip mine production, how accurate, effectively carries on the synthesis management to these information, and realizes the scientific decision-making management fully using these information, is one of important topics which is solved enhancing the mine enterprise production efficiency, the management level , the economic efficiency, and pushing forward open-air mine advance in technology.

生产地质、矿山测量、生产计划、生产管理等是露天矿生产的主要核心环节，如何准确、有效地对这些信息进行综合管理，并充分利用这些信息实现管理的科学决策，是提高矿山企业生产效率、管理水平和经济效益，并推动露天矿山科技进步亟待解决的重要课题之一。

This thesis analyzes the types and art trait of solar-assisted heat pump water heater, the development trend of direct expansion solar-assisted heat pump water heater, makes a summary of these research results from six aspects. On the basis of these works and from the point of view of receiving optimum solar radiation , the thesis develops a novel design model of direct expansion solar-assisted heat pump water heater with a truncated cone collector/evaporator, theoretically analyzes the heat that the system can absorb, compares its ability with other two types of cylinder and flat plate ones, and calculates COP and EER with computer aids. The results show that a truncated cone direct expansion solar-assisted heat pump water heater can absorb not only more solar energy but heat energy in air. It takes on favorable thermal performance. Under the average day in February which is of the worst weather throughout the year in Kunming, the COP is about 4. 2, EER is about 2.9 . The heat absorbed by the system are more than those of the other systems. The system is very great in terms of saving

本文分析研究了太阳能热泵热水系统的分类及技术特点，直膨式太阳能热泵技术国内外发展趋势，从六个方面对直膨式太阳能热泵热水系统的研究进行了归纳总结；在此基础之上，从太阳辐射的最佳接收考虑，提出了集热器／蒸发器为圆台侧面的圆台型直膨式太阳能热泵热水器的设计模型，理论上分析了这种热水系统所接收的太阳辐射和得热量，并与圆柱型、平板型的直膨式太阳能热泵热水系统进行对比分析，通过计算机辅助模拟计算出：系统不但可以有效地吸收太阳能，还能有效地吸收空气中的热量，具有良好的热性能；在昆明，以2月为代表的冬季，其太阳辐照较低，系统的制热系数COP值也能达到4.2，效能比EER值为2.9；系统的得热量高出圆柱型、平板型的直膨式太阳能热泵热水系统，节能效果明显。

As he was on the point of mounting the staircase, he perceived, on the other side of the boulevard, near the deserted wall skirting the Rue De la Barriere-des-Gobelins, Jondrette, wrapped in the "philanthropist's" great-coat, engaged in conversation with one of those men of disquieting aspect who have been dubbed by common consent, prowlers of the barriers; people of equivocal face, of suspicious monologues, who present the air of having evil minds, and who generally sleep in the daytime, which suggests the supposition that they work by night.

这一切经过的全部细节都没有漏过马吕斯的眼睛，可是实际上他什么也没有看见。他的眼睛完全盯在那年轻姑娘的身上，他的心，从她第一步踏进这破屋子时起，便已经，可以这么说，把他整个抓住并裹住了。她留在那里的那一整段时间里，他过的是那种使感官知觉完全处于停顿状态并使整个灵魂专注在一点上的仰慕生活。他一心景仰着，不是那姑娘，而是那一团有缎斗篷和丝绒帽的光辉。天狼星进了这屋子，也不会那么使他感到耀眼。

Based on the Changxing Agricultural Geologic Environment Survey in Zhejiang Province, the paper marks the abnormal plot of some elements in the soil of surface layer in Meishan Basin, such as Cd、Hg、As、Ni、Pb、S、Br、Cl、F, and lays emphasis on the spatial distribution of the abnormalism, and also evaluates the environmental quality of soil and shallow groundwater preliminarily. The results show that enormous coal gangue was stacked with open-air as a result of coal mining of Meishan Basin.

文章以长兴县农业地质环境调查结果为依据，结合区域浅层、深层土壤及浅层地下水测试分析数据的统计特征，圈定了煤山盆地土壤中Cd、Hg、As、Ni、Pb等重金属和与采煤有关的S、Br、Cl、F等不同元素的地球化学异常图，重点分析了异常的空间表现特征，并对土壤、浅层地下水环境质量进行初步评价。

Where a lot of other machines might have ports and protrusions along their edges, the Air has none -- it swoops inward from the edge to the base with only two spots for plugs, a new, 90-degree angled MagSafe power connector on the left underside, and a clicky, extremely sturdy-feeling foldable door that is impossible to open while resting on the table, and basically requires picking the entire machine up.

尽管大部分的手提电脑在两侧都会有接口和插槽(原文为protrusions，意为隆起的部分，此处应该理解为插槽—译者注)，可是MBA却有别于寻常的机子—它的所有接口都是隐藏在一个可以90度翻开的折叠门里，这个折叠门和充电器的磁吸口都在MBA两边的下方。这个可翻开折合的门让MBA用户可以在使用MBA的时候连接其他的设备，也可以在需要的时候方便的把MBA放进袋子里而不损坏到接口。

Closer to the official opening ceremony, people were starting to gather in Plaza Consistorial, where the ceremony was held, and the adjoining Plaza Castillo. Plaza Consistorial was transformed into a big, open-air party. People were chanting, tossing large balloons and splashing each other with red wine or champagne. Those on the balconies around the square also joined the folly and treated those below them with buckets of water, one after one. It all sounded fun until the crowd became too close for comfort and some people had the clever idea of pushing the others in all directions, while ground was becoming ever more slippery. The whole scene was indeed on a slippery slope itself!

快11点时，人群已逐渐在举行开幕礼的市政广场及相连的城堡广场聚集，我到达市政广场时，看到的只是一个大型户外狂欢派对，在一片欢呼和高歌中，大家不是忙着把那些大气球抛来抛去，便是互相喷红酒、香滨，站在露台的，时而也会从高浇水助兴，爱玩的人当然觉得好玩，但当后来人多得插针不入，地下又湿滑，有时无端端又有人「推波助澜」时，实在是有点危险！

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。