Which of the following is an advantage of fluorescent penetrants over visible type penetrants?
下列哪条是荧光渗透剂相对于着色渗透剂的优点？
Main components: medicinal Vaseline, natural moisturizers, essential oils, penetrants, vitamin e, etc.
主要成分：药用凡士林、天然保湿剂、香薰精油、渗透剂、维e等。
Main components: medicinal Vaseline, natural moisturizers, essential oils, penetrants, vitamin e, etc.
主要成分：药用凡士林、天然保湿剂、香薰精油、渗透剂、维e等。
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