c19

c19

1

But , the C19 ∶ 1 content in the cultured fish is 20.41 % , obviously higher than 11.68 % in the wild fish .

但养殖半滑舌鳎C19∶1含量为20.41%，明显高于野生半滑舌鳎的含量（11.68%）。
2

A method for determination of claroline ( C19 ~ C28 ) in food is performed by the use of gas chromatography in hyphenation with mass spectrometry .

本文采用气相色谱质谱联用技术，通过对样品中C19C28的全程均能分析来对食品中的矿物油进行测定。
3

Increasing the H2 / CO ratio in feed , the selectivity of C5 ~ C11 , methane and other low carbon number hydrocarbons will increase , while that of C12 ~ C18 and C19 + will decrease .

原料气H2/CO比提高，甲烷、C2~C4、C5~C11的选择性增加，C12~C18和C19+的选择性下降；