查询词典 air time

Strontium 90, released through nuclear explosions into the air, comes to the earth in rain or drifts down as fallout, lodges in soil, enters into the grass or corn or wheat grown there, and in time takes up its abode in the bones of a human being, there to remain until his death.

由核爆炸释放到空中的锶90以放射性尘埃的形式随雨水或漂浮物落到地球上，留在土壤里，进入地上生长著的草、玉米或小麦等植物体内，最后钻进人体，停留在骨骼里直到人死去。

In order to study the intake air flow characteristics in four-valve diesel engines, in this dissertation hot-wire anemometer and PIV twodimension instantaneous measuring technique are used. Extensive experimental study on two intake valve exit flow fields and longitudinal section flow field in cylinder are performed for different type of diesel engines. Great researching progress have been made on the interaction between two intake ports, and the formation process of in-cylinder swirl and flow field structure of cross and longitudinal section for four valve diesel engines. These results are presented in China for the first time and without such kind of research work reported abroad as detailed and deepgoing as this dissertation. The author designs and makes a set of hot wire measuring velocity device to measure the velocity distribution around the intake valve annulus and the cross section flow field in cylinder.

为了研究四气门柴油机进气过程中气体流动的变化规律，本文利用热线测速和PIV二维瞬态测速技术，对四气门柴油机两进气门出口全圆周流速场和缸内横、纵剖面的气体流动流场进行了大量的试验研究，在四气门柴油机两进气道之间相互影响的变化规律，缸内涡流的形成过程及缸内横、纵剖面流场结构等方面取得了重大的研究进展，这一研究工作在国内尚属首次，在国外也未见有如此全面、深入的研究报道。

In first, a new short time formula of one dimension heat conduction differential equation, based on the theory of one dimension transient method, is presented for thermophysical property measurement of wood. The result of testing on red pine and larch wood arc satisfied by new method.In succession, the relationship between heat conductivity of wood and moisture, density, porosity, temperature and grain is studied experimentally in the range from 25 to 100℃. The result shows that, the heat conductivity is in direct proportion to density. but in inverse proportion to porosity. The heat conductivity of air-dried wood increased probably linear with the temperature rising. And that heat conductivity along the grain of wood is higher than that cross the grain. The former is 1.8 or 2 times of the latter.

文中研究了25～100℃范围内，气干木材的导热系数与含水率、密度、孔隙率、温度及热流方向的关系，研究表明：木材导热系数与密度成正比关系，与孔隙率成反比关系：对于针叶材，导热系数与密度及孔隙率成线性变化关系，而对于阔叶材其变化关系近似成二次曲线；气干木材的导热系数随着温度的升高近似呈线性增加：热流平行于纹理方向的导热系数大于垂直于纹理方向的导热系数，两者的比值大约在1.8～2之间。

Fans and pumps are the mechanical properties of square torque characteristics, pump run-time,* the opening of the valve regulating the flow to meet water supply requirements, working conditions and the fan is similar to,* adjusting damper, duct or valve opening tailgate degrees to adjust the blower air volume, pumps flow methods, known as cutting regulation, regulation on cost-cutting process, the fan or pump the inherent characteristics of the same, only * small throttle clearance, baffle or valve opening, artificially increase line resistance, which increases the loss of pipeline system is not conducive to fan, pump energy-saving operation.

风机和水泵的机械特性均为平方转矩特性，水泵运行时，*阀门的开度调节流量来满足供水要求，工况与风机相似，*调节风门、风道档板或阀门的开度来调节风机风量，水泵流量的方法、称为节流调节，在节流调节过程中，风机或水泵固有特性不变、仅仅*关小风门、挡板或阀门的开度，人为地增加管路的阻力，由此增大管路系统的损失，不利于风机，水泵的节能运行。

Aviation stakeholders description: Compared with the traditional way of purchasing air tickets, online ticketing open 24 hours a day, visitors can purchase at any time, three minutes it out, eliminating the need for telephone inquiries, tickets, ticket delivery, and many other tedious aspects and costs.

航空相关人士介绍：对比传统的购飞机票方式，网上购票全天候24小时开放，旅客可随时购买，三分钟内搞定，省去电话问询、取票、送票等诸多繁琐的环节和费用。

The main services the company: to provide part-time, indoor and outdoor decoration, second-hand housing renovation, pipe dredge, air-conditioning repair and maintenance, cleaning services.

公司主 要服务项目：提供钟点工、室内外装修、二手房翻新、管道疏通、空调维修和保养、保洁服务。

Additional reading delay—once dosing of the dribble feed drum has been completed and before the reading are taken, that unit has to wait for all the product in the air to fall into the drum, once the weight is stable the machine waits for this time before reading the finished weight.

附加的阅读延迟—一次配那流口水饲养鼓已经被完成和在阅读之前被拿，那一个单位必须等候空气的所有产品掉入鼓，一次重量是赶入马房里机器这次在读完成的重量之前等候。

Additional reading delay--once dosing of the dribble feed drum has been completed and before the readings are taken,that unit has to wait for all the product in the air to fall into the drum .once the weight is stable the machine waits for this time before reading the finished weight.

另外的阅读延迟--一次配那流口水饲养鼓已经被完成而且在阅读之前被采取，那一个单位必须等候在空气中的所有产品掉入鼓。一经重量是赶入马房里机器在读完成的重量之前等候这次。

Additional reading delay—once dosing of the dribble feed drum has been completed and before the reading are taken, that unit has to wait for all the product in the air to fall into the drum, once the weight is stable the machine waits for this time before reading the finished weight.

另外的阅读延迟-一次配那流口水饲养鼓已经被完成而且在阅读之前被采取，那一个单位必须等候在空气中的所有产品掉入鼓，一经重量是赶入马房里机器在读完成的重量之前等候这次。

Good mixing with air is necessary for high DRE of hazardous wastes with high heat value.Experiments on mean residence time in rotary kiln were executed and model of axial transport in rotating drum was built. Feed rate was firstly introduced into the practical equation for MRT when the holdup is less than 10%.

对影响回转窑内物料颗粒运动特性的因素进行了试验研究，发现在较低的回转窑填充率工况下，给料速率F对固体物料平均停留时间MRT有着较大的影响，首次在现有的回转窑内固体物料平均停留时间NRT计算经验公式中加入了影响因子给料速率F的影响关系。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。