pah

In 2005, PAH enter China companion animal market by launching revolution, a high efficacy parasiticide for dog and cat.

2005年辉瑞动物保健集团正式进入中国宠物市场推出了用于驱除犬猫体内外寄生虫优质产品-大宠爱。

Secondary in abundance are aromatic sester and sesquiterpenoid hydrocarbons,but aromatic diterpenoids, most of the regular PAH are found at trace levels only.

但芳香二萜类，大多数常规多芳烃仅以微量形式存在。

The ubiquity of phenanthrene series, chrysene series compounds, perylene and retene compounds in the sediment indicated that PAHs mainly came from the terrestrial plants.

在样品中检测到角鲨烯，表明这一地区存在生物甲烷合成和细菌作用，具有生成油气及天然气水合物可能。