噴色機所噴射出的煙有用途嗎? - 社會議題
By Skylar Davis
at 2006-09-27T00:00
at 2006-09-27T00:00
Table of Contents
晴朗的天空有時會出現噴色機晃過,尾巴就會在空中留下很長很長的煙霧(很漂亮),我的疑惑是:噴色機主要用途為何?是要排煙改善天空氣體成分等等,還是只是偵查用途等等....,謝謝指教!
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社會議題
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By Lydia
at 2006-10-01T04:41
at 2006-10-01T04:41
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at 2006-09-30T22:31
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at 2006-09-30T18:32
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