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单词 operations research
例句
英语例句库

Results 24 cases testicular adnexa were made orchidectomy by operations research,and 6 cases of them were made expectant treatment because of rejecting operation.

结果24例手术治疗,行睾丸附件切除;6例因拒绝手术予以保守治疗。

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原声例句
VOA慢速英语_科技

NASA says the three U.S. astronauts will team up to test the Crew Dragon's systems and carry out research and maintenance operations.

美国国家航空航天局说,三名美国宇航员将联合测试" 龙" 号机组的系统,并进行研究和维护工作。

TED-Ed(视频版)

Within a few decades, the moon may be bustling with mining operations, research stations, and tourist routes alongside a construction yard under an orbiting space port.

几十年之内,月球上可能会布满采矿作业、研究站和旅游路线,旁边是轨道太空港下的建筑场。

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