烟

This study detected rapidly WTGs infecting oriental tobacco, and weeds such as Ageratum, malvastrum and bean surrounding the oriental tobacco field, and vector–transmitted WTGs by PCR .

本研究利用PCR技术快速检测香料烟植株及田间其它植物如胜红蓟、赛葵及菜豆等、以及病毒介体的带毒情况。

Diesel engines have the advantages of high thermal efficiency, maximum torque output, better fuel economic, and stability. In addition the diesel engine has an important contribution in dynamic machine, such as big truck, bus, trailer, attachment car, train, ship, agrimotor etc. It is excellent contributions to develop world economy, and then emissive smoke and NOx will produce air pollution to damage human health.

柴油引擎具有热效率高、输出扭力大及油耗较省、稳定又耐用等诸多优点，因此在动力机械方面始终扮演著重要的角色，如大货车、大客车、联结车、火车、船舶、农业机械等之引擎均采用之，对於全球经济发展功不可没；然而排放的黑烟和氮氧化物的浓度造成空气污染，影响人类健康，长期吸入会导致呼吸系统疾病，甚或致癌。

Furthermore, a improving design method of cell's air exhaust duct is presented to reduce the resistance change, and a new way is contrived up to regulate the valves in the cells'exit.

在此基础上，对电解槽排烟管道的设计和调节方法进行了改进，使由于电解槽加工而引起的失调降到了最低。

Presents the considerations in selection of fire dampers of ventilation system for underground garage,ventilation system for rooms with gas fire units,pressurization air supply system, smoke exhaust system in corridor,and air conditioning systems.

介绍了地下车库通风系统、需设气体灭火装置房间的通风系统、加压送风及走廊排烟系统、空调系统防火阀的选定。

The efficiency of air curtain can reach 98% on the entraining effect.

由于空气幕的卷吸作用，防烟效果只能达到98%。

The air volume, tuyere width and jet velocity in the air curtain experiment are designed according to the theoretical calculation model.

根据防烟空气幕的理论计算确定空气幕流量、吹风口宽度和风口射流速度并进行实验。

The gas and air resistance calculation is an important part of boiler design.

烟风阻力计算是锅炉产品设计工作的重要内容之一。

An opening for the escape of gas or air.

一个能使烟空气排出去的口。

They blow air through a small hole in the bottom to send smoke into the underground spaces where rats live.

他们捕鼠的传统方式是在一个陶罐里点上火，通过一个底部的小孔，将产生的烟吹进地底的老鼠洞内。

From his new vantage point, he could see the huge plume of smoke rising from what had once been the Alamo Prison.

从他的新观点，他可以看见从曾经已经是白杨监狱的东西升起的烟极大的羽毛。

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。