Pipeline ice plug phenomenon often occurs in oil product pipeline in high and cold region.
高寒地区成品油管道冰堵现象时有发生。
The anomaly investigation in the high and cold desert region is very difficult and of low efficiency because of the unique geographic features.
高寒荒漠干旱区由于其独特的自然地理条件而使异常查证工作困难重重,效果不佳。
The test adopted the optimum test design of 4 factors, probed into the source and sink characteristic of the high yield maize and relation with yield in cold region.
试验采用4因素最优试验设计,探讨寒地高产玉米的源库特点及其与产量的关系。
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