The lean combustible concentration and the 1/10 lean combustible concentration are close at the emissionpoint, and they have a great difference at the leeward of the emissionpoint.
贫可燃浓度和1/10贫可燃浓度在排放口附近相近，在排放口下风方向差别较大。
2
Petra Kroon tested the new technique, which can measure emission values at a single point for 24 hours a day, 365 days a year and for several hectares at the same time.
佩特拉克朗测试了新技术，它可以每天24小时，一年365天在单独一个点就同时测出数公顷内的排放值。
3
Will China at a certain point in the future accept the greenhouse gas emission target jointly set by the international community?