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GB/T 9089.1-2021戶(hù)外嚴酷條件下的電氣設施第1部分:術(shù)語(yǔ)Electrical installations for outdoor sites under heavy ...2022-03-14

GB/T 40578-2021輕型汽車(chē)多工況行駛車(chē)外噪聲測量方法Measurement methods for noise emitted by light-duty vehicle...2022-03-14

GB/T 40673-2021計時(shí)儀器輻射發(fā)光涂層檢驗條件Timekeeping instruments. Conditions for carrying out checks on r...2022-03-14

ASTM F2965-2013考慮商業(yè)和工業(yè)環(huán)境下腐蝕性污染條件時(shí)走道表面及處理的選擇指南(不包括建筑物)Standard Guide for ...2022-03-14

河南省煤電裝機支撐能力研究2020-11-03

Improvement of Wheat Water Use Efficiency in Semiarid Area of China2020-07-08

Settlement behavior of coal mine waste in different surrounding rock conditions2020-06-12

改進(jìn)的柳枝稷預處理方法及乙醇發(fā)酵研究2020-06-12

低負荷下甲醇洗工況的調整2020-06-12

改進(jìn)的柳枝稷預處理方法及乙醇發(fā)酵研究2020-03-23

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