查询词典 optical distance

Another refinement of our ladder is the fact that we have observed the Cepheids in the near-infrared parts of the electromagnetic spectrum where these variable stars are better distance indicators than at optical wavelengths.

我们这些距离台阶的另一个改进是：我们已经观测了造父变星的近红外波谱，这些变星在红外电磁波段的量天尺性能比可见光波段更好。

In the process of heating, reversing optical panel, the length of fiber almost proportional increased with distance from fiber to center of the plate; at the same time, the shape of fiber changed from cylindrical fibers to cone-shaped fiber that the diameter is change with the length.

光纤倒像器毛坯在这一加热、扭转过程中，纤维长度随着纤维到面板中心的距离近乎成比例增加；同时纤维的形状也由原来的柱形纤维变成直径随长度变化的锥形纤维。

Samsung has introduced its new small, handheld-sized digital camera – Samsung CL80, which comes equipped with an 14MP image sensor, 3.7 AMOLED touch screen, Wi-Fi capability, and 31 mm wide angle lens plus 7x optical zoom, providing users a wider shooting range from a shorter distance.

三星已经推出了新的小，手持大小的数码相机-三星CL80，它带有一个14MP图像传感器配备，3.7AMOLED的触摸屏，Wi - Fi功能，以及31毫米广角镜头加上7倍光学变焦镜头，为用户提供一从更广泛的较短距离射击场。

By adjusting the positions and angles of the two DVD optical pick-up heads, the relative distance of the two laser spots can be equivalent to one quarter of the grating pitch. When the grating moves, the surface profile of the grating can be measure directly, in order to obtain the two quadrature sinusoidal signals. Then by counting the zero crossing of these two quadrature sinusoidal signals and calculating the interpolation value of these two quadrature sinusoidal signals, the moving direction and moving displacement value of the grating can be obtained.

采用两个光学读取头，且两个光学读取头共用同一分光镜与同一聚焦物镜，於搭配光路的设计，可使两个光学读取头之光束打入同一聚焦物镜，藉由调整两个DVD光学读取头的位置与角度，使聚焦物镜聚焦的两相近聚焦光点的距离相等於四分之ㄧ光栅尺间距，当光栅尺移动时，可直接量测光栅尺的表面轮廓变化，以获得一组正交的弦波讯号，继而利用讯号四分割与细分割处理，计算出光栅尺之移动方向与移动量。

The fiber optic distributed temperature sensor system can sense the change of temperature along the optical fiber by the form of continuous function of distance.

分布式光纤温度测量系统能在整条光纤的长度上，以距离的连续函数形式传感出被测温度随光纤长度方向的变化。

In a real application of the optical fiber sensor, there is no spark or discharge, but convenient way of building long-distance measurement.

与传统传感器相比，它具有灵敏度高、响应速度快、抗电磁干扰、耐腐蚀，在测量过程中自身不会出现火花、放电，易于实现远距离在线检测等优点。

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