关键词:番茄;早疫病;发病规律;塑料大棚;浙江省 [gap=5732]Key words: Tomato; Early blight; Occurrence rule; Plastic tunnel; Zhejiang Province
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A new kind of pulse laser on tunnel junction with plastic package is reported.
报道了一种新型塑料封装隧道结脉冲半导体激光器。
Dispersion ranges of stress, displacement and plastic region of different coping thickness of wall rock of an underwater highway tunnel are simulated.
模拟了某拟建中水下公路隧道，在不同隧道顶板厚度时的围岩应力、位移、塑性区的分布及大小。
It is a developing tendency to use polyethene plastic waterproof membrane as main structure in tunnel waterproof and water drainage.
以聚乙烯塑料防水板为主要防水结构的复合式防排水系统是隧道防排水设计与施工的发展趋势。
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