w/w wall-to-wall是什么意思

用法例句

Effects of soil surface mulching on cucumber production and water use efficiency in solar greenhouse;

地面覆盖对温室黄瓜生产及水分利用效率的影响

Soil surface mulching was one of important method to improve the agricultural microclimate.

地面覆盖法是改善农业小气候的一种重要措施。

5℃ in late stage;Soil surface mulching decreased water consumption which was respectively reduced 22.

通过地膜和小麦秸秆覆盖,研究日光温室中地面覆盖对黄瓜地温、耗水量及产量的影响。

Effects of ground coverings on radiant energy distribution in the canopy of Eucommia ulmoides Oliv.coppice forest;

地面覆盖对皮叶两用杜仲(Eucommia ulmoides Oliv.)林冠层辐射能分布的影响(英文)

In order to provide a basis for researches on effect of ground cover on nonwood forest trees,research progress on effect of it on crops and some .

地面覆盖能起到增肥、保墒、防热、预防根系冻害和改善土壤理化性状的作用,促进土壤有机质和营养物质的积累、分解和转化,从而复壮树势,提高果品的产量和质量。