isotopic fractionation的用法和樣例：
例句
- The isotope fractionation effect is primary factor affecting accuracy of hydrogen isotope analysis.
同位素分餾效應是影響氫同位素準確分析的主要因素。 - The carbon isotope fractionation effect of samples from Jincheng is more apparent than that from Changji, which is mainly attribute to the different pore structure of coal samples.
晉城地區煤樣解吸氣體的同位素分餾效果比昌吉地區的明顯，孔隙結構差異是一個(gè)主要影響因素。
