频率

In addition, both the moisture content of the mature and seedling of Sparus macrocephalus and the fat content of seedling of Sparus macrocephalus increased with the growing of feeding frequency, whereas the fat content of mature Sparus macrocephalus decreased with the growing of feeding frequency.

2黑鲷成鱼和鱼种的水分含量随饲喂频率的增高而增加，黑鲷成鱼脂肪含量随饲喂频率的增高而下降，黑鲷鱼种脂肪含量随饲喂频率的增高而增加。

Researchers have discovered, for instance, that our visual systems are sensitive to sound frequencies, that our sense of smell is in part dependent on what are now called "osmic frequencies", and that even the cells in our bodies are sensitive to a broad range of frequencies.

研究人员发现，例如，我们的视觉系统是敏感的声音频率，我们的嗅觉部分是依赖于什么是现在被称为&锇频率&，而且即使是细胞在我们的身体非常敏感广泛频率。

How quickly it transitions is pretty steep, so you might be able to get away with adding as little as 10Hz to your speaker's lowest reproduceable frequency. Start with 20, then tweak to preference to get the best transition.

有一个好准则就是看看你的喇叭频率响应曲线，看看他最低工作频率是多少、或者是再哪一个频率点输出音压掉到－3db ，找出这个点然后再加上20HZ 把这数值当作重低音分频点。

That said, the crossover's slope (i.e. how quickly it transitions) is pretty steep, so you might be able to get away with adding as little as 10Hz to your speaker's lowest reproduceable frequency. Start with 20, then tweak to preference to get the best transition.

有一个好准则就是看看你的喇叭频率响应曲线，看看他最低工作频率是多少、或者是再哪一个频率点输出音压掉到－3db，找出这个点然后再加上20HZ把这数值当作重低音分频点。

It is demonstrated that the frequency drift will break up the phase-locked state of the laser array and induce the spatial instability of the far-field intensity due to phase noise. It is also found that although the evanescent coupling between elementary lasers can restrain these effects to some extent, the restrainability is too limited to be effective when the frequency drift is relatively strong.

通过对耦合激光器阵列动力学方程的数值研究发现，频率漂移将破坏激光器阵列的锁相状态，并引入相位噪声，导致输出远场光强分布不稳定；研究还发现：倏逝波耦合能够对频率漂移的影响起到一定的抑制作用，但这种抑制只在频率漂移较弱时才有效，因此，如果将该阵列用于光束合成，加入相应的抗干扰措施还是很必要的。

Liu JunHua;Huang ShuGong;Liu JiDongA tri-dimensional model for a jeffcot rotor was reported. A new motion equation of the torsional vibration with natural retation and the conception frequency was presented. The natural frequencies of disk rotors with different geometrical structures and were computed based on the finite-element method, and the factors affecting the coefficient of the natural frequency with rotation were analyzed.

在转轴以一定速度旋转的条件下，推导了考虑转动频率情况下的单质量盘转子扭振运动方程，通过有限元方法对不同几何结构的单质量盘转子在不同转动频率下的扭振固有频率进行了计算，对影响单质量盘转子扭振动频的动频系数进行了分析。

There is obvious negative correlation between dominant frequency and bodily size in Rhinolophidae, Vespertilionidae and Hipposideridae.

菊头蝠科、蝙蝠科和蹄蝠科回声定位信号能量最大处频率与体型呈明显的负相关，蝙蝠科相关性最好，其次为蹄蝠科，较差的为菊头蝠科；能量最大处频率与前臂长的回归线表明：对于前臂长相同的蝙蝠，蹄蝠科的能量最大处频率远远高于其它两科，菊头蝠科高于蝙蝠科。

The results showed that there were differences among treatments in transformation of high quality gene(Glu\|D 1 5+10) in F 1 grains, and heterozygous type was more frequently appeared in the treatment of irradiation. In the F 2 segregative population, heading date deviated to early\|mature parent in the treatment of reciperocal cross and its combination with irradiation, indicating that cytoplasm and irradiation could promote the heading. In F 3 the expressive frequency of (5+10) gene in the cross was lower than that in reciperocal cross, and irradiation treatment could raise the expressive frequency of(5+10) gene. These results showed varience in different crosses.

结果表明，不同组合处理间F1籽粒优质亚基(Glu D15+1 0 )的转化存在差异，辐射处理的多以杂合型出现。F2 分离群体中，反交及反交结合辐射处理的抽穗期明显倾向于早熟的亲本，细胞质与辐射具有促进抽穗期的作用。F3 植株Glu D15+1 0亚基的表达频率，不论是哪种组合，反交时 5+1 0亚基的表达频率高于正交；无论正交还是反交，辐射处理提高了 5+1 0亚基的表达频率，而且在不同组合间存在差异。

These cases may indicate that the separatrix frequency region of bidirectional electron beams are within a large braodband from 250 to 2900 MHz and the originating ranges are in a very small (4 to 100 MHz) and different bands.

介绍云南和北京天文台射电频谱仪观测到的3个对偶的米波--微波Ⅲ型爆发，估计了双向电子束起源的频率和高度，3个事件分别揭示了在正向和反向漂移爆发之间的分界频率(约为250，1300和2900 MHz)，它们指出了一个致密的电子加速源，在这个源中产生了向上和向下两个方向注入的电子束，从这些事例可以表明不同事件的双向电子束的分界频率有一个相当大的范围(250-2900 MHz)，而它们的起源范围却是在一个很小的(大约4-100 MHz)和不同的频段范围内。

If the frequency of a laser is modulated sinusoidally, the first harmonic component of saturated absorption signal can be used as error signal to stabilize the frequency of the laser.

对激光器进行频率调制，检测原子分子饱和吸收信号中的一次谐波成分得到频率误差信号，反馈控制可以实现激光频率的稳定。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐