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河道渠化
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河道渠化
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河道渠化
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river canalization
河道渠化
通过建设闸坝和船闸、升船机等建筑物以及人工裁弯、缩窄河床和固化河岸等工程措施,将天然河流改造成较为规则的渠道,使河流成为互相衔接的梯级,以达到增加通航水深和改善航行条件的目的。
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student and official selection method based on the Three Colleges
student appeal system
student athlete
student-centered approach
student club
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Student Days
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student drama club
student enrolment system of vocational school
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STUDENT man-machine dialogue system
Student Nonviolent Coordinating Committee
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student registration system
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student's dictionary
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Students for a Democratic Society
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