周期性的

The tunable photon broad band radio frequency phaser based on a silicon ring resonance cavity comprises a pumping signal light-generating system, a carrier wave light-restraining double-sideband generating system, a silicon ring resonance system and a measuring system; wherein, the silicon ring resonance system comprises a light coupling device and the silicon ring resonance cavity; the output of the light coupling device is connected with the input port of the silicon ring resonance cavity; wherein, the silicon ring resonance cavity is composed of a silicon annulet and a root of a straight waveguide; the air gap distance between the silicon annulet and the root of the straight waveguide is several ten nanometers or several hundred nanometers; the taking characteristic of the silicon ring resonance cavity is the characteristic of a seasonal reject trap; the transmission rate in the position of a resonance wavelength is equal to zero or is very close to zero.

本发明包括：泵浦信号光发生系统、载波抑制光双边带产生系统，硅基环形谐振腔系统，以及测量系统。所述硅基环形谐振腔系统包括一个光耦合器和一个硅基环形谐振腔，光耦合器的输出连接到硅基环形谐振腔的输入端口，其中：硅基环形谐振腔由一个硅基微环和一根直波导构成，硅基微环和一根直波导之间的空气隙间隔为几十至几百纳米，硅基环形谐振腔频谱特征是周期性的带阻滤波特性，在谐振波长处的透射率等于0或非常接近0。

It is difficult to calculate the natural frequencies of silent chain drive accurately because of the discontinuity of its structure and the polygonal effect.

其中心线的位置存在着周期性的变化，这种变化使得链节和链轮的接触与脱离是在一瞬间完成的，链条存在着剧烈的横向振动。

It has been discovered by the investigation that the greater the effective area of immersed material layer of the filtration element, the greater the minimum fluidizing speed.

它的特点是不需要像陶瓷过滤器那样周期性的反吹清灰，避免在运行中过滤元件交替受到不同方向的热应力作用，从而延长了过滤元件的使用寿命[1～2]。

As the terrans are chased off, some extra larvae pop out next to the hatchery – zerg queens now have the ability to periodically induce hatcheries to produce more larvae, increasing the production capacity for zerg.

击退人族同时，孵化所旁边了出现了一些额外的幼虫——虫族女王现在拥有能力周期性的刺激孵化所来生产更多的幼虫，扩大虫族的生产能力。

Biorhythm A periodic physiological or behavioral change that is controlled by a biological clock.

生物节律：由生物钟控制的周期性的生理上的或行为上的变化。

The periodical changes of D,α and r_0 with the adsorption position were expressed with the first five terms in Fourier expansion. The potential surface of H_2 on (111) crystal surface was computed individually with LEPS method.

再根据表面周期性的特点，用Fourier展开的前五项表示D，α和r_0随表面位置的变化，最后用LEPS势函数作出H_2在晶体(111)面上的吸附势能面。

In places, the water table is declining at a rate of a meter a year, necessitating the periodic deepening of wells and the use of ever-more-powerful pumps.

有的地方地下水位的下降速度甚至达到了每年1米，迫使人们周期性的加深水井并使用更有力的的水泵。

The capacity of X-filter is controlled by the pressure difference across the filtering element.

过滤机的能力是通过压差控制的，浓缩后的绿泥周期性的排除。

Investors now believe that there is only about a 10 per cent chance of a reduction in official interest rates by the May meeting of the Fed's interest rate-setting committee, according to the Federal Reserve Bank of Cleveland.

2大企业联合会首席经济学家盖尔·弗斯勒对英国《金融时报》表示，生产率增速的下滑不大可能是周期性的，也不大可能是服务行业增长疲软的结果，这不禁令人&担心信息和通信技术对生产力的长期影响。&

In addition, the TACAN set receives a periodic identification signal from the beacon transmitter, which, after proper processing within the TACAN set circuitry, results in a corresponding audio output signal in Morse code to the aircraft's intercommunication system.

此外， 该塔康仪从信标转发器接收到一个周期性的识别信号，在塔康仪电路内部进行适当的处理后，产生一个对应的音频输出信号，用莫尔斯电码传送到飞机的双向通信系统。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷