定额的英文：
fixed amount
quota

参考例句：

Liquidated damages
定额赔偿

allocate rations for a week - long camping trip.
分配一星期外出野营的定额

Converting them into simpler percentage rates is an overdue reform.
把定额增收转变成按比例增收是一迟到的改革。

Norm in kind
实物定额

Level annuity
定额年金

preliminary estimate norms and estimate norms of capitalconstruction
基本建设概算、预算定额

Norm quote is governmental action.
定额报价是政府行为。

What is the irrigation norm?
灌溉定额是多少？

Didn't make the quota.
没有达到定额

Fulfill the hour norm
完成工时定额

fixed是什么意思：
adj. 固定的，不变的；（表情）呆滞的

Have you fixed on the date?
日期选定了吗?

The horse race was a fix.
这场赛马有人操纵。

Can you get a fix on the submarine?
你能给潜水艇定位吗?

amount是什么意思：
v. 总计，共达；等于，相当于
n. 金额；数量，数额

amount deposited
存款金额

A small amount of liquid;a drop.
少量液体；一滴

My savings amount to $2001.
我的储蓄共达2000 美元。

quota是什么意思：
n. 配额；定额；最低票数

"Quota, quotas... I have had it. "
配额，配额……我受够了。

The quota on luxury item have is revoke.
奢侈品限额已被撤消。

The production group has overfulfilled the quota today.
今天，这个生产小组超额完成了定额。