free flame的意思|示意
美 / fri: fleim /
英 / fri flem /
活火头，活火，自由火焰
free flame相关例句
The formaldehyde - free flame retardant finish of cotton fabric with ammonium polyphosphate ( APP ) was researched.
无机磷系阻燃剂多聚磷酸铵 ( APP ) 用于纯棉织物无甲醛阻燃整理.
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