查询词典 dioxide

Levels of nitrogen dioxide currently exceed the World Health Organization's clean-air guidelines by 78%.

北京空气中的二氧化氮含量目前已经比世界卫生组织制定的清洁空气标准高出了78%。

The concentrations of nitrogen dioxide and ozone also exceed the objectives for a few days in a year.

二氧化氮及臭氧的浓度，每年也有几天超出了空气质素指标。

High concentration of sulphur dioxide, nitrogen, oxides and dust have long been known to be harmful.

人们早已知道，二氧化硫、氮、氧化物和尘埃浓度高是有害的。

Carbon dioxide and nitrogen are non-combustible gases present in the producer gas.

二氧化碳和氮的非物质燃气目前的可燃气体。

The emissions are of great concern, and attempts have been made to reduce discharge of sulfur dioxide and nitrogen oxide.

人们关心排放量的问题，而且已经开始多方努力减少二氧化硫和氧化氮的排放量。

Global warming is mainly due to human activities, such as greenhouse gases generated by industrial production of nitrogen oxides and carbon dioxide.

全球气候越来越暖的最主要原因就是人类的日常活动，人们在生产的过程中产生大量气体如二氧化碳和氮气等气体。

As long as there is ozone or nitrogen dioxide and sunlight present, other undesirable reactions will occur.

只要臭氧或二氧化氮与阳光同时出现，其他不想要的反应就会发生。

Levels of nitrogen dioxide in the city exceed the World Health Organization's clean-air guidelines by at least 78%.

与世界卫生组织对洁净空气的指导性标准相比，北京空气中二氧化氮浓度至少高出78%。

Car fumes produce carbon dioxide and nitrogen oxide - so try to cut down on car journeys if possible.

汽车废气产生二氧化碳和氧化氮-所以尽量减少汽车旅行，如果可能的话。

Sulphur dioxide and nitrogen oxides will mix with water droplets in the air and form acid rain .

二氧化硫和氮氧化合物与大气中的水份结合而成酸雨。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。