Yue Jiang
Rotating sprinklersare widely used in spray irrigation engineering due …
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中华人民共和国水利部 著
根据水利部水利行业标准制修订计划，按照《水利技术杯准编写规定》的要求，本…
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Ministry of Water Resources of the Peop…
This standard comprises 8 chapters and 1 annex， the major contents of …
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