Winter, early spring with thin straw moisture, and then covered with a layer of plastic film greenhouse insulation, shielding, warming up.
冬季、早春加盖薄层稻草保湿，再盖上一层地膜保温，大棚遮挡严实、升温。
It is a problem demanding prompt solution to find out a method which is available for measuring structural strength and stableness oi a plastic film greenhouse.
为建立一种切实可行的测试方法，对塑料大棚结构强度、稳定性进行测试，这是当前生产上亟待解决的问题。
The transparent film can also be wide for greenhouse, plastic greenhouse, and film use.
宽幅的透明薄膜还可以供温室，塑料大棚，以及地膜之用。
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