英语翻译

实用例句

• 矩，动差任意变量的正整数功效的期望值。第一个矩是分配的平均数
  The expected value of a positive integral power of a random variable. The first moment is the mean of the distribution.
• 人们使用轧机把材料加工成各种形状，如圆棒材、方棒材和矩形棒材。
  A rolling mill is used to form the material into various form such as round rod, square or rectangular bar.
• 他们做生意规矩吗？
  Is their business on the square?

相关短语

• 规

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