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It is an important half hardware-in-loop simulation equipment, which is often used to simulate the aerodynamic torque load on the missile rudder or elevon actuators in the flight.

它是地面半实物仿真系统中的一种重要专用设备，用来模拟飞行器舵机在飞行过程中所承受空气动力力矩载荷。

For a monotone twist map the well-known Birkhoff fixed point theoremsays that the circles with rational rotation number will break up whence a finitenumber of pairs of periodic points arise,half of which are elliptic and the othershyperbolic.Moreover,around each elliptic periodic point a few of new invariantcurves will appear and make a picture of phase space with a self-similar structure.Again one may ask is there a similar picture for higher dimensional Hamiltoniansystems?

对于单调扭转映射，著名的Birkhoff不动点定理指出，在通有情况下旋转数为有理数的不变曲线一般会破裂，在原来的不变曲线附近会产生有限多对周期点，其中一半是双曲的，一半是椭圆的，而在椭圆型周期点的周围又会产生一圈圈的不变曲线，使得椭圆周期点附近的动力学行为和整个相空间的动力学行为十分相象，换句话说，整个相空间具有无限嵌套的自相似结构，自然又产生了一个问题：对于自由度数目大于2的高维哈密顿系统，其相空间是否有类似的图象？

ELs are usually about half as high as a credit card.

els，13岁通常高达大约一半的信用卡。

Tragically, Elsie Marion took ill and died of pneumonia in 1928, aged three-and-a-half year.

不幸的是，埃尔西·马里恩生了病，于1928年死于肺炎，年仅3岁半。

First! the ~ plum dried vegetables lukewarm water soaks for a half hour, elutriate cleanly

首先！~梅干菜（温水浸泡半个小时，淘洗干净

After much dispute an agreement was worked out under which Adonis was to spend half the year above ground with Aphrodite, but the remaining six months in the Elysian Fields.

经过一番口舌之争，他们达成协议：阿多尼斯每年可以到阳间和阿芙罗狄特相聚半年，但剩下的六个月得到冥府渡过。

After much dispute anagreement was worked out under which Adonis was to spend half the year above ground with Aphrodite,but the remaining six months in the Elysian Fields.

经过一番口舌之争，他们达成协定：阿多尼斯每年可以到阳间和阿美罗狄蒂相聚半年，但剩下的六个月得到天堂渡过。

After much dispute an agreement was worked out under which Adonis was to spend half the year above ground with Aphrodite,but the remaining six months in the Elysian Fields.

经过一番口舌之争，他们达成协议：阿多尼斯每年可以到阳间和阿美罗狄蒂相聚半年，但剩下的六个月得到天堂渡过。

The western countries have paid close attention to compromising emanation of military electronic devices for more than half century.

西方大国在军用电子设备上关注泄漏发射问题已有半个多世纪的历史。

And when Phinees the priest, and the princes of the embassage, who were with him, had heard this, they were satisfied: and they admitted most willingly the words of the children of Ruben, and Gad, and of the half tribe of Manasses.

司祭丕乃哈斯和同他来的会众的首领，即以色列人的族长，听了勒乌本人、加得人和默纳协人所说的话，都表示满意。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。