on the average / on average / on an average三者区别是什么这三个词组是否都对,有什么区别呢

on average、on the average和on an average有何区别 最好举几个例子 On the average中的the能否省略? on an average和on the average在用法上的区别 on average与average的区别 on the average / on average / on an average三者区别是什么这三个词组是否都对,有什么区别呢 in an average 和 on average的区别 英语翻译Finally,the average treatment effect on the treated (ATT) is estimated as: on on on the 用in terms of,on the other hand,on average各造一个英语句子英语短语造句子 Find the average rate of change for f(x) = 7x + 12 on [2,8] 8 times the income is gained by families now than fifty years ago on average the average temperature on Tuesday is 20%,that is,6℃,lower than Monday trains on the line （ ） at an average （ ） （ ）350km per hour 用带on的短语填空快!While the guard was _____,he heard a shot.You must not _____,lerve this room.可以选用以下短语：on display,on show,on business,on foot,on duty,on the whole,on fire,on purpose,on the average,on any account,on second 英语翻译Note that the firm’s average rate of return is,in effect,a rough average of realized IRRs on past projects 英语翻译If the settling parties agree on the average amount of damages per share that would be recoverable if the plaintiff prevailed on each claim alleged under this subchapter,a statement concerning the average amount of such potential damages Find the average rate of change for f(x) = 1/(x+6) on the interval [0,5] 帮翻译：in which of the fllowing parts does a topic have the most parts on average?