He attended an open-air Mass and rally.

他出席了露天弥撒和集会。

An air mass of lower pressure; often brings precipitation.

大气压低于正常值的气团；常伴有降水。

Third, the air mass is dry, strong high-pressure tank of sunshine.

第三，空气团是干燥的，日照强烈的高压槽。

The major controlling influence is the inflow of a cold, dry, air mass .

主要支配的影响是干冷气团之流入。

Air mass flow sensor is broadly used in engine testing and control system.

质量空气流量传感器广泛应用于发动机测试及控制系统。