normal yield

The results of MATLAB simulation prove that the method not only realizes the normal ventilation and gas drainage in drivage roadway,but also saves energy.

用MATLAB智能控制工具箱进行了仿真实验,结果表明:该方法能较好地实现掘进巷道的正常通风和瓦斯排放,达到节能运行的目的。

The results of MATLAB simulation prove that the method not only realizes the normal ventilation and gas drainage in drivage roadway,but also makes coal production much safer and saves energy largely.

MATLAB仿真实验表明:该方法能较好地实现掘进巷道的正常通风和瓦斯排放,使煤矿生产达到安全节能运行。

In the event, the total notes and coins in circulation was increased by $28 billion to the peak of $124 billion at the end of 1999.

一九九九年年底，流通纸币与硬币总值1,240亿元，比正常流通量增加约280亿元。

"Conventionally, the direction of electric current is that of the flow of the positive ions."

为了表示电流总的作用,通常取正载荷子的流动方向为电流方向。

Before installation, check line of flow through valve so that valve will function properly.

安装前，切断通过阀门的流体，以使阀门工作正常。

Correct sizing of stop-check valves is important.

截流止回阀的通径正确计算选择非常重要。

Effect of ventilation with high levels of PEEP and lower-tidal volume on the hemodynamics in patients with normal respiratory function

高呼气末正压小潮气量通气对肺功能正常患者血流动力学的影响

There are differents ways to maintain normal navigation in navigable channel during channel enclosure for building hydropower plant.

如何使通航河道在水电站截流至船闸正式通航期间维持正常的航运，其做法不一。

Abstract: There are differents ways to maintain normal navigation in navigable channel during channel enclosure for building hydropower plant.

文摘:如何使通航河道在水电站截流至船闸正式通航期间维持正常的航运，其做法不一。

Generally, our bodies can muster a defense to routine strains of influenza,

一般在正常情况下，人类身体有能对抗普通流感病毒的防卫机制，

normal operating amperage

正常运转安培值, 正常运转电流值

AC Alternating Current( AC) is electric current that alternates between a positive maximum value and a negative maximum value at a characteristic frequency, usually50 or60 cycles per second( Hertz).

交流交流是指电流在正负最大值之间以特定的频率变动，通常频率为50或60赫兹。

Dinner usually begins with soup.

正餐通常从汤开始。

We usually dine at 7: 00.

我们通常在7 时进正餐。

The traffic lights weren't working properly

交通灯工作不正常。

normal magnetic flux density

正常磁感应[磁通]密度

A handkerchief is usually square.

手帕通常是正方形的。

uterine bleeding disorder

子宫之不正常流血现象

abnormal nipple discharge

乳房不正常之流出物

To communicate by letter, usually over a period of time.

交流通过信件交流、通常在一段时期内