查询词典 one quarter

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 structure of instrument, theoretical calculation and parameters testing were investigated. Firstly, a DOAP was designed, in which the light path was in the same plane. This was calibrated by known polarization that combined a polarizer with one quarter-wave plate.

首先，设计了一个光路在同一平面上的分振幅斯托克斯参量测量装置，用偏振片和1/4 波片组合产生已知的偏振态来定标该装置，用4 个性能一致的光电探测器实现快速测量光束的斯托克斯参量。

For a typical quick control valve, this phenomenon occurred in the valve seat travel is equal to one quarter of the diameter of office.

对于一个典型的快开控制阀，这种现象发生在阀芯行程视镜等于四分之一的阀座直径处。

If you've ever wanted to catch your own fish straight from a hole in the ice, try Ontario, Canada, which offers up over one quarter of the world's freshwater, with plenty of trout, bass and pike.

如果你有曾希望能在冰上打个洞来钓鱼，可以去加拿大的安大略。这个蕴藏了世界上四分之一的淡水的地方富含鲑鱼、鲈鱼、狗鱼。

Adult-onset myopia is a relatively common condition, with approximately one quarter of cases occurring in adulthood.

就作者知识而言，近视相关基因孪生子的研究是第一个关于此类支持遗传基因在成人始发近视中起作用。

At the same time I installed the quantum statistics, one quarter only 25 yuan, I have elected their favorite pictures, re-fitting their own shops, look more beautiful!

同时我安装了量子统计，一个季度的才25元，我选了自己喜欢的图片，重新装修了自己的店铺，看起来更漂亮了！

BLOOM: Because it didn't suit you one quarter as well as the other ducky little tammy toque with the bird of paradise wing in it that I admired on you and you honestly looked just too fetching in it though it was a pity to kill it, you cruel naughty creature, little mite of a thing with a heart the size of a fullstop.

177布卢姆：比起另外那顶插上极乐鸟翅膀的可爱的宽顶无檐小圆帽来，它连四分之一也跟你般配不上。你戴上那一顶，简直太迷人啦，我十分神往。可惜宰那只乌儿大损了，你这淘气残忍的人儿。那小鸟的心脏只有一个句号那么大呀。

The World Health Organization estimates 12 million people are infected with syphilis worldwide each year, affecting some 2 million pregnancies, with about one quarter of them resulting in miscarriages or stillbirths.

据世界卫生组织估计，全世界每年有1千2百万人感染梅毒，大约2百万孕妇受影响，其中四分之一发生流产或死胎。

Coal is still used, mostly in power stations, to cover one-quarter of our energy needs, but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel.

煤仍被使用，主要是在发电站，以解决我们四分之一的能源需求。但煤确是最无效率，最不健康，最不环保的矿物燃料。

Using the first law of black hole mechanics, it follows that the entropy of a black hole is one quarter of the area of the horizon.

使用黑洞力学第一定律，它遵守黑洞熵是活动视界区域中的四分之一。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。