由气柱玻管、压力表、定容机构、固定架和体积标尺组成。本仪器不使用水银，消除了污染。
Consists of gas tube, manometer, volume controller, clamp and scale. No danger of pollution without mercury.
联合国粮农组织说，六架定翼飞机将于本周抵达西非参与该地区已有的四架飞机的作业。
The FAO says six fixed wing aircraft are arriving this week to join four already operating in the region.
其目的是为了使核电站用电缆桥架的设计、制造标准化和有一定的通用性。
The purposes are to make the design and manufacture of cables bridge frames standardize and partly universalize.
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