The research on CO2 flux in forest system was one of the hot topics in global changes.
森林生态系统CO 2通量的研究已成为全球变化研究的热点之一。
The measured CO2 values are substituted in a formula to calculate the CO2 flux per unit area and per unit time at different depths under standard atmospheric pressure .
将测得的CO2浓度值代入计算公式，即可求得标准大气压下某一深度土壤单位面积、单位时间内的CO2通量值。
The standardized processing of observed CO2 flux data and issue of high grade data product are the precondition and foundation of researches at CO2 flux and its related field.
CO 2通量观测数据的规范处理及其高质量数据产品的发布，是CO 2通量及其相关领域研究的前提和基础。
So study on the CO2 flux at the estuary of Yangzte and Huanghe is of great importance for the discussion of global carbon cycle and for the consummation of the global carbon database.
研究长江口和黄河口邻近海域的碳化学体系，对于更完整、准确地探讨边缘海区对全球碳循环的贡献、以及完善全球碳系统参数数据库无疑是极为必要的。
CO2 emission flux of soil under several vegetation covers during daytime is higher than that at night, and afternoon higher than the morning.
各类植被覆盖下土壤CO 2排放通量均表现为白天高于夜间，午后高于午前。
Technological process of CO2 gas shielded metal arc welding with stainless flux cored wire used for stainless steel tank construction is presented in this paper.
介绍了采用不锈钢药芯焊丝CO2气体保护焊焊接不锈钢储罐的工艺过程。
Technological process of CO2 gas shielded metal arc welding with stainless flux cored wire used for stainless steel tank construction is presented in this paper.
介绍了采用不锈钢药芯焊丝CO2气体保护焊焊接不锈钢储罐的工艺过程。
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