The exchange efficiency is 49.6%.

本方法的交换效率为49.6％。

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The Effect of Tracheal Gas Insufflation on Gas Exchange Efficiency.

气管内气体吹入通气对气体交换效能的影响。

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The designs of chillerradiatorunique , so the heat exchange efficiency is very high.

冰水机冷凝器及散热器设计独特，换热效果特佳。

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Requests for permission to hike rates increasingly meet stiff political resistance, with demands for efficiency gains in exchange for smaller-than-requested rate increases.

WSJ: Business Asia: Singing the Abe Electric

Even though Toyota is officially still committed to support its manufacturing base in Japan, it hopes to ride out the current slump in demand and adverse foreign exchange movement through cost-cutting, hyper-efficiency and collaboration on new technology with parts suppliers.

FORBES: Toyota Burned By Land Of The Rising Yen

The Department of Documentation and Information maintains cooperation and coordination with the Arab countries in the domain of information processing and exchange, in order to guarantee easy flow and high efficiency.

UNESCO: Department of Documentation and Information