查询词典 air gas

For example, the air pollution made by vehical using gas, rubbish pollution made by packing, sound pollution made by transpotation, circulating and producting, resource wasting and traffic jam in the city.

如运输车辆的燃油消耗所造成的空气污染，包装所带来的废弃物污染，运输和流通加工所带来的噪音污染、资源浪费、城市交通堵塞等。

Abrasive jet machining is a kind of special machining method in which gaseity-solid mixture is formed by mingling high-pressure air or other gas with abrasives. Applied by specially-designed nozzle, these particles impact and erode workpiece so as to remove materials.

磨料喷射加工是利用微细磨料与高压气体混合形成的高速气-固两相流，通过专门设计的喷嘴射向工件，依靠磨料的高速冲击和冲刷作用而实现去除工件表面材料的一种加工方法。

Based on the conversation equations for hydrodynamics and chemical reaction dynamics, by adopting the k-e turbulent model and the EBU-Arrhenius combustion model, the SIMPLE algorithm was used to investigate numerically the methane-air premixed gas vented explosion process in the two-dimensional space of the spherical vessel with a conduit for explosion venting.

为了得到球形容器内可燃气体的泄爆强度产生机理以及燃烧火焰与压力传播的基本规律，从流体力学和化学反应动力学守恒出发，采用κ-ε湍流模型和EBU-Arrhenius燃烧模型，利用SIMPLE算法对带泄爆导管的球形容器二维空间内甲烷－空气预混气体的泄爆过程内外场进行了数值计算，获得了气体燃烧过程中火焰和压力传播特性以及气体流动特性，能够比较清晰地反映泄爆的整个过程。

So the present study was taken to compare the differences in the mechanisms of dissipating excess light energy in cucurbit crops and to study the differences in both the ROS metabolism in root system and the photosynthesis among six cucurbit crops with different temperature tolerance growing at different root-temperatures. The main results are as follows: 1、The species specific response of three cucurbit crops with different heat-tolerance: warm-adapted cucumber, heat-tolerant sponge gourd and heat-sensitive figleaf gourd to diurnal changes in air temperature and irradiance intensity were investigated in a typical summer sunny day. Three cucurbit species were compared using parameters in gas exchange, chlorophyll fluorenscence, photon allocation and photosynthetic electron flux.

因此，本试验以温度敏感性不同的瓜类作物为材料，研究了夏季自然条件下不同物种间在耗散过量光能的主要机制差异；探讨了它们对不同根际温度在根系活性氧代谢及地上部光合作用等方面的生理响应差异，所取得的主要结果如下： 1、在夏季晴天条件下，三种温度敏感性不同的瓜类作物：喜温的黄瓜，耐热性的丝瓜与热敏感的黑籽南瓜在气体交换、叶绿素荧光、光能分配及光合电子流对一天中温度与光照环境变化的响应上存在物种间差异和日变化特征。

Mainly used for conveying water, sewage, gas, air, steam heating and other purposes such as low-pressure fluid.

主要用于输送水、污水、煤气、空气、采暖蒸汽等低压流体和其它用途。

The air leak tester of GST-4000 is successfully designed according as the characteristics of Fuel Gas Stopcock and test demands.

GST-4010型检漏仪是GST-4000的基础上，根据燃气具旋塞阀的具体特点及检测要求而开发的一款产品。

In this paper,through the adding of minute rare earth oxides La2O3 and CeO2 in the electrode covering,we study their effects on high temperature oxidation and corrosion resistance of the weld metal in the air and sulphureous gas.

本文通过在焊条药皮中分别添加微量稀土氧化物La2O3及CeO2，研究其对焊条熔敷金属在空气中和含硫气氛中抗高温氧化及腐蚀性能的影响。

The optimum parameters on syntonic circuit of charge and discharge are confirmed, and two channels glow discharge is realized at the same time. The relationship of output energy, stimulated voltage, and work air pressure of mixed gas is studied experimentally.

对影响气体快放电过程的各种因素，如储能电容与峰值电容的比值、工作气压、充放电电感及输入电压的范围等进行了实验研究，确定了充放电谐振回路的最佳参数，实现了双通道的稳定辉光放电。

Volatile organic compounds are hydrocarbons that tend to evaporate into the air when gasoline is transferred from tank trucks to service station storage tanks or from gas pumps to vehicles.

挥发性有机化合物碳氢化合物，往往会蒸发到空气中，通过罐车到服务站储油罐或由加油站到车辆等。

The Bulk-cement Delivery Tank Truck is not only the vigorously promoted China's main cement transport bulk carriers, but also the main instrument to delivery the cement in the cement of oil and gas wells, the bulk transport can be greatly save the resources, reduce the damage to the environment and reduce air dust pollution, having great strategic significance to the development of our national economy.

气动下灰车是我国大力推广水泥散装运输的主要运载工具，也是有气井固井作业时水泥运载和输送的主要工具，水泥的散装运输可以大大节约资源，减少对环境的破坏，减少空气中粉尘污染，对我国国民经济的发展具有重大的战略意义。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。