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water transport and distributionengineeringof theirrigation district
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water transport and distributionengineeringof theirrigation district
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农学
农业水土工程
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water transport and distributionengineeringof theirrigation district
灌区输配水工程
将灌溉水按所需的流量和高度,输送至农田灌溉系统的各个部分,保证各种灌水方法以良好状态运行的工程。
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astronomical spectrometry
astronomical spectrophotometer
astronomical spectrophotometry
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Astronomical telescope
astronomical telescope
astronomical test
astronomical tests of general relativity
astronomical theodolite
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astronomical timekeeper
astronomical time scale
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astronomical unit, AU
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astronomical year book
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Astronomic Map in Beijing Longfu temple caisson
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