Meanwhile, some problems on upper air sounding balloon that should be solved at present are pointed out.

同时指出了目前高空探测气球应解决的若干问题。

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Stay seated; utilize a combination of the forks rebound, upper body strength and power on the cranks to loft the front of your bike in the air.

坐在车座上，把上身的力量集中在横把上，利用叉子回弹的合力使前轮离地。

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Objective To analyze the diagnostic value of double contrast of air and barium study on diseases of upper digestive tract.

目的分析评价气钡双重对比造影在上消化道疾病中的诊断价值。

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By working closely together, aerodynamicists and designers can determine the precise shape of the various bits of the car's body needed to ensure that the air slows down on all upper surfaces but speeds up on the under surfaces.

ECONOMIST: CAR DESIGN

"Mould (on plants) can irritate asthma, increase upper respiratory problems, cause headaches and affect concentration, " Dr. David Miller an expert on indoor air quality from Carleton University, Canada told the Globe and Mail newspaper.

CNN: Office foliage for feel good factor