词汇	fracture of coal
释义	fracture of coal 🌏碎煤
随便看	two sided goods two-sided goods two-sided group two-sided hypothesis test two sided ideal two-sided ideal two sided ideal of an algebra two-sided identity two-sided identity element two-sided inequality two-sided interval estimation two-sided invariant linear functional two-sided invariant linear functionals two-sided invariant mean two-sided invariant pseudometric two-sided invariant pseudo-metric two sided inverse two-sided inverse two-sided inverse element two-side direction burr two-sided knit goods two-sided laplace transform two-sided lapping two sided limitation two-sided limitation