基本的技能，像是减法、乘法和看时间等，通常是孩子会最先忘记的。
Basic skills, such as subtracting, multiplication and time-telling, are usually the first to go.
本文介绍一种具有优先级扩展的时间自动机模型，并对一种计算d BM减法算法进行改进。
In this paper an extension of timed automata with priorities is introduced, and we present an improved algorithm to compute subtraction on DBMs.
创建一个计算器类，能够在同一时间完成两个数字的加减法。不太懂，原文：%。
Create a class Calculator, which performs the addition and subtraction of two Numbers at a time. The sample code explains the expected API.
一次减法操作所需的时间，不包括从存储器取出数据和把结果送回存储器所需要的时间。
The time required for one subtract operation, excluding the time required for getting data from the memory and giving the result back to the memory.
一次减法操作所需的时间，不包括从存储器取出数据和把结果送回存储器所需要的时间。
The operating cycle represents the period of time elapsing between the acquisition of goods and the final cash collection resulting from sales.
一次减法操作所需的时间，不包括从存储器取出数据和把结果送回存储器所需要的时间。
The operating cycle represents the period of time elapsing between the acquisition of goods and the final cash collection resulting from sales.
应用推荐