The effects of elevated CO2 concentration on dry matter allocation and nutrient contents of red birch seedlings were studied under two planting densities in controlled environment Chambers.
采用控制环境生长室研究了2个密度水平下CO2浓度升高对红桦幼苗干物质分配与营养的影响，并分析了红桦干物质分配与养分浓度的关系。
With CSZ altitude Chambers, you can control the temperature environment for testing while simulating various altitudes from site level to 65,000 feet (42 Torr).
通过使用该压力箱，您可以控制测试温度环境，同时模拟从地面到65,000英尺(42托)的不同高度。
To appreciate the unsteady environment existing in liquid propellant rocket chambers it is necessary that the steady state be well understood.
为了分析液体推进剂火箭发动机燃烧室中存在的非稳态环境，必须很好地了解稳态状态。
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