发射

The HEED, XRD, and XPS results confirmed the forming of intermetallic compounds between silver and rare earth. As far as silver and lanthanum be concerned, the format of intermetallic compound is AgLa.

由此，本文首次提出了稀土元素在稀土金属间化合物中的能量传递模型，认为稀土与银金属间化合物的4f能级位于费米能级附近下方，部分局域化且与导带部分耦合。4f能级与导带能级之间的电子跃迁是稀土元素在Ag-BaO薄膜中传递能量的方式，也是光电发射增强效应的来源，而4f电子的光吸收截面随入射光子能量的增加而增大的特点则是"蓝强"现象的原因。

One old hunter who has a dry tongue, who used to come to bathe in Walden once every year when the water was warmest, and at such times looked in upon me, told me that many years ago he took his gun one afternoon and went out for a cruise in Walden Wood; and as he walked the Wayland road he heard the cry of hounds approaching, and ere long a fox leaped the wall into the road, and as quick as thought leaped the other wall out of the road, and his swift bullet had not touched him.

有一个老猎户，说起话来枯燥无味，常到瓦尔登湖来洗澡，每年一回，总在湖水最温暖的时候到来，他还来看我，告诉过我，好几年前的某一个下午，他带了一枝猎枪，巡行在瓦尔登林中；正当他走在威兰路上时，他听到一只猎犬追上来的声音，不久，一只狐狸跳过了墙，到了路上，又快得像思想一样，跳过了另一堵墙，离开了路，他迅即发射的子弹却没有打中它。

That ashen glow is earthshine – sunlight that's reflected from Earth and back to the moon.

那淡淡的光就是地球的反照——日光从地球发射到月球的光。

Along with the other regiments in the line, engineers worked with the infantry on assault boat training and in experimenting in perfecting assault boat tactics. On February 12 the engineers successfully demonstrated the use of assault boats, pontoons, rafts, and shooting communication wire across the river with rockets and grenade launchers. Smoke generators, first used in September 1944, were an innovation that the front-line troops greatly appreciated.

沿防线的其他各团，工兵伙同步兵操演冲锋舟，以使冲锋舟战术运用达成完美。2月12日，工兵部队成功示范了冲锋舟、浮船、浮桥的作用，以及以火箭或榴弹发射器往河对岸抛甩电话线。1944年9月首次用于实战的烟雾发生器是获得前沿部队高度赞许的一项发明。

Under the assumption that the channel state information was available only at the receiver,the capacity of MIMO systems in Rayleigh fading channel was investigated on the basis of information theory. Three special expressions for the MIMO capacity over ergodic flat fading channel were derived.An asymptotic formula for MIMO systems with equal number of transmit and receive antennas in small SNR was also given. Simulation results show that this approximation is relatively accurate.

以信息论的观点为基础，在假设信道状态信息仅收端已知的情况下，采用等功率发射方案，研究了瑞利衰落信道下MIMO系统各态历经信道容量，推导了三种特殊MIMO信道的各态历经信道容量表达式，以及在小信噪比下等收发天线MIMO系统的容量近似公式，并通过仿真进行了验证，仿真结果表明该近似公式比较精确。

Our nuclear missiles can be launched at a moment's notice.

我们的核弹一接到通知可以随时发射。

Pp Our nuclear missiles can be launched at a moment's notice.

我们的核导弹一接到通知就可以随时发射。

Colored lights that emerges does so at an angle of 19 degrees, less than half of

的光散发射出来，这比通常的42 度的一半还要小一些。

Electrical signals produced by unwanted sources (atmospherics or receiver noise or unwanted transmitters).

由不必要的源头产生的电子信号（大气干扰或接收器噪音或有害发射。

But this kind of open emission and reception system in High frequency communication has to face two challenges: firstly, natural interference from atmospherics and industry; secondly, tracing, blocking and multipath interference from enemy.

但这种开放式的发射和接收电磁波的通信，特别是在短波通信领域，不仅易遭到天电、工业等自然干扰，而且还要遇到敌方人为的跟踪、阻塞干扰以及多径等各种干扰。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。