Steranes and terpanes exist in saturated hydrocarbon component of oil and source rock, and they are usually identified by gas chromatogram-mass spectrum.
甾萜类化合物存在于原油和生油岩的饱和烃组分中，通常用色谱-质谱法鉴定。
2
The intelligence program infers molecular structure of hydrocarbon using spectrum-structure correlation rules inferred from about 2000 reference spectra of hydrocarbons.