调谐

It can implement fast gas concentration measurement through an single isolated absorption line.

利用半导体激光器可调谐、窄线宽特性，通过检测气体的一条吸收线实现气体浓度的快速检测。

Most of the molecular characteristic absorption is very weak, and the absorption line width is very narrow that can't be measured by traditional methods.

TDLAS系统的关键是利用激光二极管有很高光谱分辨率和可调谐性的特点，可以对特定分子在特定光谱范围内的一条振转线的光谱吸收进行测量而反演吸收气体的浓度，而且能够把待测分子与背景的干扰区分开来。

A 1×N wavelength division multiplexer with one channel corresponding to the absorption line of acetylene within the transmission window of 1530 nm was used in the WDM active sensing network.

实验中采用了一个1×4的波分复用器，其通道对应于乙炔气体的吸收波长，系统的解调通过扫描可调谐光滤波器的波长来实现。

As walk-off angle and acceptance angle of beam limit the conversion efficiency and the tunable wavelength range of difference frequency generation, research include effective nonlinear coefficient, walk-off angle and acceptance angle as functions of wavelength, the relationship between conversion efficiency and acceptance angle, and the impact of crystals length on the process of frequency conversion.

由于光束的走离角、允许角限制了转换效率和差频调谐波长范围，研究内容还涉及了有效非线性系数、走离角和允许角与波长的关系，转换效率与允许角的关系，以及晶体长度在频率变换过程中产生的影响。

In addition to boosting top speed, this 2 Speed Transmission features an adjustable shift point and changeable gear ratios for extra tuning convenience.

此外，以提高最高速度，这2条高速传输功能，可调转向点和复杂多变的齿轮比为额外的调谐方便。

Then, it is tuned to a channel frequency of one of a digital cable channel and an analog cable channel based upon a value of the details channel source field.

然后，根据具体频道源字段的值，将其调谐到数字有线频道和模拟有线频道之一的频道频率。

Light passing through the anamorphic lens is sensed by a detector array having outputs coupled to a focal plane processor that processes the analog outputs from the detector array into initial tuning commands for detection and characterization of pulses in the input signal.

通过合成透镜的光由一检测器阵列检测，该检测器阵列的输出端耦合至焦面处理器，后者将来自检测器阵列的模拟输出处理成初始调谐命令，用于检测与表征输入信号里的脉冲。

The results abtained will provide a basis for the design of AOTF with large angular aperture.

本文所得结果对改善大角孔径的声光可调谐滤波器设计提供了理论依据。

Solid angular aperture of non-collinear acousto-optic interaction tunable filter［J］.

非同向互作用声光可调谐滤光器的立体角孔径［J］。

The precondition to use fiber resonator to measure rotation angular velocity is to acquire high performance and stable resonance, which requires the overcome of polarization instability of fiber resonators and extremely narrow line width, tunable, high coherent light source.

用光纤谐振腔进行转动角速度测量的前提条件是要获得高性能且稳定的谐振腔，这必须解决光纤谐振腔的偏振稳定问题，同时要求有极窄线宽的可调谐高相干光源。

Means the parent directory, so this command means to execute "toolchain.sh," which is in the current directory.

代表父目录，所以这个命令就是执行当前目录下的"toolchain.sh"。

Yes,In fact,I'm on our city ream.

是的。事实上我是我们市队的。