甚麼是化學泡泡雪?

2006-12-20 3:00 am
甚麼是化學泡泡雪?

回答 (1)

2006-12-20 9:55 pm
✔ 最佳答案
A method of making artificial snow by snow machines comprises atomizing compressed water into a subzero atmosphere to make fine ice particles with the aid of adiabatic expansion of compressed air or the aid of cold air. The artificial snow thus produced contains 10% by weight or more of water, and has a density of about 0.3 to about 0.4 g/cm3.


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