查询词典 air mass

In the cold and warm air mass itself, although there are different temperatures, but is relatively small, and temperature difference between cold and warm air mass is very great.

在冷暖气团内部，虽然温度也有差异，但相对来说是很小的，而冷暖气团之间的温差却非常大。

The effect of the inlet parameters of air, air mass flow rate and spray water rate on the performance of closed cooling tower is discussed in the paper. A mathematical model for evaluating heat and mass transfer performance of closed cooling tower is set up. The analytical solution of differential equations is derived.

目的 分析闭式冷却塔内各参数，即空气焓值、含湿量、冷却水温等的分布情况；探讨空气入口参数、空气质量流量、喷淋水量对闭式冷却塔冷却性能的影响规律。

Cavitation erosion is related to bubbles.Bubbles pop out from drilling fluid in vacuum conditiun and form air mass against cyclinder well.For low resistance to pressure,air mass happen explosion when compressed,making cyclinder wall cavitated.

气蚀发生的条件与气泡密切相关，气泡在真空时从钻井液中溢出形成气团，并紧靠缸壁；气团在压缩时因承压能力低而产生爆炸，从而引起缸壁产生气蚀作用。

But with increasing temperature,homolysis is enhanced,especially for PPTA.When the temperature reaches 1000℃,PPTA takes higher mass loss than PMIA.In both inert gas and air,mass spectra of volatiles are obtained,and PMIA and PPTA mostly show the same mass signals.

在低降解温度时，采用水解机制解释了PMIA纤维三步的失重过程和较低的耐热性能；而随着温度升高，均裂机制增强，导致PPTA纤维在1000℃时的失重大于PMIA纤维。

The characteristic of which thermal air flow sensor can directly measure air mass flow is used,a hot-wire air flow sensor which can be applied to intake system for an internal combustion engine is designed.

利用热式空气流量传感器直接测量空气质量流量的特点，设计了一种应用于测量内燃机进气系统进气量的热线式空气流量传感器。

Winter, mainly in Mainland China Polar continental polar air mass, or variability of air masses under the control of the mainland, at 80 ~ 90 ° E for many high-altitude ridge of high pressure, while the coastal areas at high altitudes often a great groove, ridge ago, after the trough of cold air southward continually strengthened cold high ground, warm up the oceans for many low-pressure control.

冬季，我国大陆主要为极地大陆气团或变性极地大陆气团所控制，在80～90°E高空多为高压脊，而沿海高空常为一大槽，脊前、槽后的冷空气不断南下，加强了地面的冷高压，温暖的海洋上多为低气压所控制。

Bozhou lies in south of the North Temperate Zone, it is mainly affected by tropic oceanic air mass and polar continental air mass, with a climate of seasonal temperate semi-humid monsoon.

亳州市地处北温带南部，属暖温带半湿润季风气候，为热带海洋气团和极地大陆气团交替控制接触地带。

First, we adopt MEMS technology to fabricate micro venturis with different widths of 150 and 200 um respectively and utilize FLUENT software to analyze the flow fields. Air was set as the working fluid and the air mass flow rate of inlet is changed to obtain the pressure drop between inlet and outlet. When a flow passes through the throat, the backflow results in the symmetric separations occur and grow with the increase of mass flow rate.

在微文氏管的研究部分，首先利用微机电制程技术制造出两种不同尺寸的微文氏管，宽度分别为150及200微米，开口角度各为45°，总长则为10 mm，再以空气作为工作流体，利用不同质量流率来量测微文氏管进出口的压力差并配合FLUENT软体分析观察其流场分布的情况。

In order to satisfy the real-time control of air/fuel ratio,this model was simplified based on two supposals as follows:(1) the intake air mass flow rate has a linear form with the product of the two established expressions,the throttle angle expression and the intake air pressure expres...

为满足基于模型进行空燃比实时控制的要求，基于以下两个假设对模型进行了简化：(1)假设进气流量与模型所建立的关于节气门开度和进气压力的表达式的乘积成线性关系；(2)充量系数和进气压力的乘积与进气压力成线性关系。

The riser total pressure drop and apparent solids holdup increase with the solids-to-air mass flow ratio, and there is greater effect of solids-to-air mass flow ratio on apparent solids holdups in lower part of riser.

此外，床层总压降和截面平均颗粒浓度随固气质量比的增加而增加，在上升管下部截面平均颗粒浓度受固气质量比的影响比上部大。

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％。