查询词典 air mass

Objective: To establish a gas chromatography-mass spectrum method for rapid determination of 54 kinds of VOCs in the air in a workplace by solvent desorption.

目的：建立工作场所空气中54种挥发性有机物的GC/MS快速测定方法。

Also works well with aftermarket intake systems, mass air sensors, TBI spacers, etc.

也可和改装市场买到的进气系统、空气质量传感器、TBI装置配合使用。

Urban mass transit issuperior in solving traffic congestion and air pollusion, but some hard technical problems have hindered its develop ment.

在解决交通混杂和大气污染等方面，轨道交通具有明显的优势，但是也存在一些难以解决的技术性问题。

Using Field single ignition experiments of the four unconfined volume dispersion and small dosage solid FAE and TNT bombs experiments, we got the peak overpressures of solid FAE at different distances. Compared with TNT, The overpressure of FAE is 1.14~1.6 times higher than that of the TNT. Based on the theory of the air shock wave overpressure, the FAE relativity TNT mass is evaluated. At the edge of the explosive field, the number is 3.88. Pictures of high speed photography indicate that the duration and the most effect area of the FAE and TNT. Compared with TNT, obviously the FAE has more advantages. And, based on the theory of the critical concentration of dust explosion, the radius of dust explosive zone is evaluated. The phenomenon that the overpressure decays rapidly with distance is analyzed. It is suggested that the explosive temperature should be increased as the main approach to improve the FAE explosive capability in the condition when the over pressure is invariable.

通过四组无约束固态燃料空气炸药装置与等质量的TNT在野外开放空间的一次起爆对比实验，测得了不同配方组份FAE装置在不同距离的爆炸超压分布，FAE装置峰值超压比相同距离的TNT高1.14-1.6倍；并运用空气冲击波峰值超压公式计算出了FAE的等效爆炸TNT当量随距离的变化关系，在爆炸场边缘区，FAE装置爆炸当量达到了3.88倍TNT当量；通过高速摄影的图片得到了爆炸产生火球的持续时间和最大作用范围，与等质量TNT爆炸火球相比，FAE的优势明显；运用粉尘爆炸下极限浓度估算了云雾爆轰区半径，并分析了测量到的固态FAE爆炸场的压力分布单调衰减的原因；建议在保持超压不变的情况下，把提高爆温作为提高FAE爆炸性能的主要途径。

As a first step to industrialize this focusing coal liquefaction technology, it is essential to study the multiphase transport characteristics of this new type reactor. In this paper, mass transfer and mixing characteristics of a three-phase continuous loop reactor with a concentric draft tube were measured by the dynamic dissolved oxygen and saturated KCl solution pulse trace methods,with glass beads as solid phase, air as gas phase and tap water as liquid phase, respectively.

本文在同心内置Φ 0.14×1.5m导流筒的Φ 0.2×2.5m有机玻璃环流反应器中，以空气和水为气、液相，玻璃珠为固相，分别利用动态溶氧法与饱和KCl脉冲示踪法测量了液相体积传质系数和轴向分散系数，考察了表观气速、进料浆速、固含率、固相颗粒直径、液相表面张力以及操作方式对上述两个传递参数的影响规律，并将实验结果关联为量纲为1关联式；同时，根据环流反应器的结构特点，建立了传质系数分区模型和轴向分散系数分区模型且分别获得了解析解，对床层传质和混合的不均匀性做了理论分析。

The results show: external diffusion is the main resistance for mass transfer,and increasing air velocity and decreas.

研究结果表明，外扩散过程是传质的主要阻力，增大风速、减小吸附剂颗粒直径是减少传质阻力的有效措施。

In order to demonstrate the design scheme of the air-cushion surge tank for a hydroelectric project,the hydraulic fracturing technology is adopted to define the in-situ stress and related rock mechanical parameters of rock mass surrounding the high pressure cavern.

：为论证某水电工程高压洞室的方案设计，采用水压致裂技术对高压洞室的原地应力及相关岩体力学参数进行细致的测试。

The expansion of high-temperature saturated humid air discharged from fuel cell stack is a two-phase variable-mass process.

从燃料电池电池堆中排放出的废气为高温饱和湿空气，工质不同于干空气，其膨胀过程也与干空气有一定的区别，是两相变质量过程。

The methods and equipment for measuring and recording of Distance, Time, Speed, Altitude, Mass or other specific parameters, as well as equipment technical standards, shall be determined by each FAI Air Sport Commission and specified in the appropriate section of the Sporting Code.

用於测量和记录距离、时间、速度、高度、重量或其他特定参数之方法和设备，以及设备的技术标准，应取决於各 FAI 航空气运动委员会，并载明於运动规则的适当章节。

Mazda BT-50 facelift also inherits its quiet interior - with large amounts of insulation, a low-noise air cleaner and radiator fan, and a smooth-running common-rail diesel with dual-mass flywheel.

马自达英国电信- 50整容也继承了它的宁静内部-与大量的绝缘，低噪音空气净化器和散热器风扇，并顺利运行共轨双质量飞轮柴油。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。