【primary_air】什么意思_英语primary_air的翻译_音标_读音_用法_例句_在线翻译

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Exhaust emission of vehicle engines is one of the primary air pollution sources.

车用内燃机的废气排放是大气污染的主要污染源之一。

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When the primary air blast wave from the explosion strikes the ground another blast wave is produced by reflection.

当爆炸引起的入射冲击波触及地面时，由于波的反射便产生另一冲击波。

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更多双语例句

Suddenly, he remembered how he had to hold two water buckets up in the air in primary school, along with the faces of the headmaster and his homeroom teacher.

NPR: Literature and Lullabies from the 'Axis of Evil'
In 2008, Reapers and Predators, the Air Force's two primary remote-controlled vehicles, will spend almost 120, 000 hours in the air on reconnaissance and intelligence missions, up from just over 80, 000 hours last year and less than 5, 000 in 2001.

FORBES: War Without Soldiers
Satellite and conventional over-the-air broadcasting will remain the primary high-def program sources until cable operators decide to carry high-def content and Hollywood delivers prerecorded HD cassettes or discs.

FORBES: Something Special in the Airwaves

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