本文对北京地区草坪冬季电缆电热融雪保绿问题，草种的选择及土壤温度场进行研究，旨在对北京地区草坪电缆加热系统进行优化设计。
Studies are conducted on melting snow and keeping green by electric cable heating system on Beijing sports turf in winter, grass seed selection, and turf soil temperature field.
本试验研究了罐藏绿色蔬菜的保绿，筛选出了最佳保绿剂及保绿工艺条件。
Green of can vegetable is studied so as to find the optimum compound protective green agent and technology condition of green preservation.
青岛保绿安国际贸易有限公司热情诚邀国内外客商前来洽谈合作！
Qingdao Berlian International Trading Co. , Ltd. warmly invited domestic and foreign customers visiting our company discuss and cooperate!
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