Construction properties of different soil profile constitutions in black soil of corn belt in Jilin were systemically studied.
以吉林省中部玉米带黑土为供试土壤,研究了黑土不同剖面构型的结构特性。
At present, domestic PVC plastic profile trades low-level construction is serious, the price war grows in intensity.
目前,国内PV C塑料型材行业低水平重复建设严重,价格战愈演愈烈。
In digital campus construction, information transmission security of teaching affairs administration system is one of the high profile issues.
教务管理系统的信息传输安全问题是数字校园建设中高度关注的热点之一。
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