水汽

The theoretical analysis shows that the wave-activity relation presented a nonconservative form in which the pseudoenergy wave-activity density is composed of disturbance kinetic energy, available potential energy and buoyant energy. The local change of pseudoenergy wave-activity density depends on the combination of shear of zonal basic flow, Coriolis force work and wave-activity source or sink as well as wave-activity flux divergence.

理论分析表明，拟能量波作用方程具有非守恒形式，其中的拟能量波作用密度主要由扰动动能、有效位能和浮力能三部分组成；拟能量波作用密度局地变化除了受拟能量波作用通量散度影响之外，纬向基本气流切变、科氏力作功以及由非绝热加热和水汽相变所构成的波作用源汇项对其也都有贡献。

It is concluded that during the landfall of Saomai, the orographic uplifting is able to enlarge the rainfall of the typhoon, and also to enhance the centre potential vorticity, vertical velocity as well as the convergence of moisture flux obviously.

结果表明，台风登陆过程中地形抬升作用对台风降雨量有显著的增幅作用；台风中心位势涡度、气流垂直上升速度、水平水汽通量散度明显增大；地形抬升机制在台风登陆时刻达到最强。

The flow field construct of meso-β cloud clusters which bring the heavy-hard rainfall in northeast plateau is that the low level cloud cluster is located in the south of converging region, the southern low level influx converged in the cloud cluster and have some affection on the setting up of the rainstorm in the low level. In the middle level, the cloud cluster is lied in near the westerly trough and the southwest airflow ahead of the trough constantly transmits water vapor to the cloud cluster. In the high level, there are a pair of high and low pressure centers around cloud clusters and are obvious divergence airflow, and there is weak ageostrophic high level outflux along pressure force.

产生高原东北部地区大到暴雨天气过程的中—β尺度云团的流场结构特征是：在低层，云团位于辐合区的南部，低层的偏南低空入流在云团内辐合，对大到暴雨的形成有一定的作用；在中层，云团位于西风带低槽附近，槽前的西南气流不断地给云团输送水汽；在高层，云团附近有一对高、低压中心，为明显的辐散气流，沿气压梯度力方向有强度不强的非地转高空出流。

Based on T213 numerical forecast products, the abrupt city flood caused by heavy rain in Kunming, Yunnan province on June 24, 2006 is analyzed. The results indicate that the event has a close relation with the southward movement of upper shear line and the peripherad southwest warm and wet airflow.

2006年6月24日云南昆明发生了当年最为严重的一次城市洪涝，利用T213数值预报产品资料对这次突发性洪涝灾害的气象成因进行了诊断分析，结果表明此次强降水与高空切变线南压及西太平洋副热带高压外围西南暖湿气流有关，高空切变线南压有利于引导北方冷空气南下入侵，而西太平洋副热带高压外围西南暖湿气流为此次洪涝灾害的爆发提供了丰富的水汽。

Photosynthetically available radiation, water vapor deficit and air temperature all related to net ecosystem CO2 exchange significantly during daytime.

光合有效辐射、饱和水汽压差以及气温均对昼间的净生态系统CO2交换有着显著的影响。

The second one is a regurgitant cold air around Qilian mountain at about 37°N along the valley topography moves westward.

高原东北部地区的大到暴雨产生时低层600hPa的流场特征是三股气流的辐合，水汽来源有三条。

When the above process circulates to some extent, saprolitic crusts will be formed inside structural planes.

腐岩壳在雨季直接吸收、贮存流经其表面的液态渗入水，在核心石外侧形成富水结构层并在旱季向包气带或其内侧的风化前锋提供水汽。

Rubber aprons with the use of time ages, water resistant, once your watch appears immediately to the licensing of water vapor repair station for processing so as to avoid causing parts secable and shorten the service life of the watch.

橡皮胶圈随着使用时间的推移逐渐老化，防水性能逐渐减退，一旦发现手表中出现水汽应及时到授权维修站进行处理，以免引起零件生锈，缩短手表的使用寿命。

A method is presented with which instantaneous PAR can be calculated with high accuracy from Moderate Resolution Imaging Spectroradiometer products and Digital Elevation Model.

该方法是对普通的大气传输模型进行简化，在模型中分别考虑了削减光合有效辐射的5个主要因子：瑞利散射、臭氧和水汽吸收、气溶胶散射以及地表和大气间的多次反射。

Where one could took out through the wet window at the swarmy might.

从那里透过水汽蒙蒙的玻璃可以望到外面。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了