... 松砂（铸造） aerfound oning the sperd 充气法 air diffussion 充气期间 air diffussion period ...
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在真空吸蚀原理的基础上，提出了防治塌陷的自然充气法，在中国某些地区试验效果良好。
Based on the principle of suction, a natural aeration method is proposed for prevention of Karst collapse, which has been tried in some areas in China with satisfactory results.
气球驾驶员约翰·斯坦纳在宾夕法尼亚州伊利为自己的热气球充气。 图为最古老的飞行器照片，摄于1857年，采用的是四分之一感光底片旧式照相法。
Aeronaut John Steiner inflates his hot air balloon at Erie, Pennsylvania, as seen in the oldest known photograph of an aircraft, a quarter-plate ambrotype taken in June 1857.
以非线性有限元法为基础，提出充气薄膜结构有限元分析的基本方程及解法。
On the basis of non linear finite element method, fundamental equation and solution of pneumatic membrane structure finite element analysis are put forward.
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