メタン系炭化水素: (organic chemistry) alkane

(organic chemistry) alkyne

(organic chemistry) alkene

(organic chemistry) alkene

エチレン系炭化水素: (organic chemistry) alkene

(organic chemistry) alkane

a Chinese character substituted for the original character used in a written expression, usually replacing a complex character with a simpler one

a female given name

a female given name

(university slang) During the attendance check, to deceive a lecturer into thinking another person is in attendance by answering for them.