Characters, shapes and stage concentration of the contaminant were defined; and two representative drain pipes in Harbin was been measured by field experiment.
对污杂物的性质、形状以及分级浓度进行了定义，并通过实验在典型时段对哈尔滨市两处具有代表性的污水干渠进行了现场测定。
Two high concentration of CO_2 processing and background showed the biggest transpiration rate in heading stage, followed by jointing stage, tillering stage relatively small trend.
两种高CO_2处理和背景浓度均呈现出抽穗期蒸腾速率最大，拔节期次之，分蘖期相对较小的趋势。
The solar pumped laser with two stage sunlight concentration system is designed and constructed.
提出并搭建了采用两级会聚系统的太阳光抽运激光器系统。
The solar pumped laser with two stage sunlight concentration system is designed and constructed.
提出并搭建了采用两级会聚系统的太阳光抽运激光器系统。
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