A violation, as of a law, a regulation, or an agreement a breach.
违背违背一项法律, 规则或协议违反

a population of half a million
五十万人口

But a computer simulation is a kind of a model.
但电脑模拟也是一种模型

A regulated opening for discharging a liquid, as in a stopcock.
控制通过入口的液体量的阀。

an opportunist a political speculator a soldier of fortune an adventurer
投机分子

Ab initio calculation.
从头算方法

ab initio calculation method
从头计算方法

Harmonia axyridis ab. Bimaculata
异色瓢虫二斑变种

Study on Foraging of Harmonia axyridis ab. Bimaculata to Prey Odour Sources
异色瓢虫二斑变种对猎物搜索行为研究

Study on Simultaneous Optimization of Geometry and Exponents in ab initio Calculation
从头算几何优化兼及轨道指数优化的研究

The calculator is rapidly replacing the abacus.
计算器正在迅速取代算盘。

The course of development of abacus calculation.
二，我国珠算算法的发展历程。

Progress of research on brain cognition of mental abacus calculation
珠心算的脑认知研究进展

To Develop InfantsPotential by Mental Abacus Calculation.
利用珠心算教学开发幼儿潜能

An abacus, calculate million species on earth mentality.
一把算盘，算出人世间万种心态。

The Promotion of Teaching in the Calculation By Abacus from the Self Consciousness.
从自我意识着手促进珠算教学

Caculation with an abacus can not be replaced in computer age.
在电脑时代珠算有着无法替代的作用。

On the Brain Mechanism of Reckoning on the Abacus and of Mental Calculation and Its Educational Value
珠心算的脑机制与育人价值初探

As the students learn to manipulate the beads on the abacus, they learn to add and subtract.
学生在算盘上拨拉算珠, 学习加减。

The Necessity of Strengthening Calculation with Abacus in High Vocational Education
论加强高职教育中珠算教育的必要性

Effects of mental abacus calculation on cognitive capacity for pupils
珠心算练习对小学生基本认知能力的影响

Perpetual Heavenly Stems and Earthly Branches and Five Calculating Abacus of Acupuncture on Time Point Selection
万年干支和针灸五种按时取穴推算盘

Importance of Calculation by Abacus Teaching of Accounting Profession in Vocational College
试论高职高专财会专业珠算教学的重要性

But， in fact， an abacus is an adding machine， calculator， and computer.
可是，实际上，算盘是一个加法机，计算器和计算机。

Children thinking courses abacus calculation, English, literature special education, English language.
儿童思维训练班珠算, 英语, 文学启智, 英语口语。