夏季应防止阳光暴晒，冬季低温季节施工应采取保温措施。
Summer sun exposure should be prevented, the winter cold season, the construction insulation measures should be taken.
在高山地区和许多地区的低温季节里，植物的冷害是一个普遍的农业灾害。
Chilling injury is a prevalent agricultural disaster in alp zones and low temperature seasons of many areas.
对水质净化过程中投加净化剂的效果进行了研究，得出了在冬春低温低浊季节，水力循环澄清池-快滤池净化过程投加净化剂脱混的最佳选择。
The effects of adding purifying agent during the process of water purification were studied. The best opportunity for applying purification agent to water during purification process was obtained.
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