At midnoon,the street sprinkler van started working,to lower the street temperature.
正午的时候,洒水车开始工作了,给地面降温。
At midnoon,the street sprinkler van started working,to lower the street temperature.
正午的时候,洒水车开始工作了,给地面降温。
Ca absorption and tipburn of lettuce were studied under different application of N, K, Ca, sprinkler irrigation and border irrigation in open field.
摘要在露地栽培条件下,研究了不同氮、钾、钙水平处理以及灌、畦灌对生菜钙吸烧心的影响。
According to action principle, extinguishing process and efficiency of the sprinkler systems, it is put forward that the ringed arrangements replace the ramiform arrangements.
根据自系的作用原理、灭火过程效率,提出用环状管网代替目前广泛采用的枝状管网的观点。
The results showed: inncrease application of Ca, balance application of N and K and sprinkler irrigation could increase Ca content of lettuce leaves, reduce occurring of tipburn.
结果表明,增施钙肥,平衡氮、钾肥及采取灌的方式均能增加生菜叶片的钙含量,减少烧心的发生。
This article makes comparative analysis of the sectorization for the sprinkler system used in high-rise building and approaches to the details for pressure reduction and choice of fire-fighting pumps.
该文对高层建筑自动水系的分区进行比较分析,针对减压措施消防泵选择的一些细节进行了分析探讨。
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