There is good evidence that if baby is given a bottle of formula while lying flat, the formula can get into the Eustachian tubes and middle ear and cause an infection.
有证据表明如果瓶喂配方奶给平躺着的宝宝，配方奶可能进入宝宝的耳咽管和中耳，进而引起感染。
In the same time, a calculating formula of welding flat cover special for hydraulic test is deduced by setting certain safety coefficient of hydraulic test.
同时通过对试验压力取一定安全系数，推导出液压试验专用焊接平盖的计算公式。
Combining practical matters, a method of the stress calculation of circular ring plates under press loading using flat circular plates formula was introduced.
本文结合实际问题，给出了利用《应力应变公式》中的等厚平圆板公式对受压环板应力的理论计算方法。
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