best initial ratio 最佳初始比值

strontium initial ratio 锶同位素初始比

initial ratio of deviatoric stress 初始偏应力比

initial ratio of strontium isotopes 初始锶比值

initial conversion ratio 初始转换比 ; 初期转换比

initial gas-oil ratio 原始气油比

initial value of isotopic ratio 同位素比初生值

initial expansion ratio 初期膨胀比