叉丝

Before the measurement the cross hair is to be placed on the monitor sharply.

测量之前，十字叉丝在监视器上清晰显现。

If the collimator cross hair does not center or does not lie at all in the video window, the additional optics

如果瞄准仪的十字叉丝不在中央或者不在全视场，附带的自准直光学系统可依靠测微螺旋来调节。

The measuring device is structured by including a He-Ne laser; a beam expander, a soft aperture slot and a off-axis parabolic mirror to be measured are arranged in turn along the direction of the emergent laser beam direction of the He-Ne laser; a standard cross hair and a micro objective are arranged in turn on the direction of the reflected beam of the off-axis parabolic mirror; the micro objective is arranged on the focus of the off-axis parabolic mirror; the focus is imaged on an area array CCD; the output end of the area array CCD is connected with a computer; the off-axis parabolic mirror is fixed on a five-dimensional electric adjusting frame.

一种离轴抛物面镜点聚焦能力测定装置和测定方法，测定装置的构成包括：一台He-Ne激光器，沿该He-Ne激光出射激光束方向依次设置扩束器、软边光阑和待测的离轴抛物面镜，在该离轴抛物面镜的反射光束方向依次设置标准叉丝和显微物镜，该显微物镜位于所述的离轴抛物面镜的焦点，所述的焦点成像于面阵CCD上，该面阵CCD的输出端接计算机，所述的离轴抛物面镜固定在一五维电动调整架上。

The center of balls in bearing is fixed by the fork of locating sleeve. The cooperation between linkage pin, grip slot of drive axle and ratchet wheel is used to make the drive axle and driven axle rotate in same or different directions for threading or turning back.

本攻丝装置由拨叉定位套上的拨叉将轴承中滚珠的中心固定，利用联动销与主动轴的卡槽和棘轮的配合，实现主动轴与从动轴的同向转动和反向转动，完成丝锥正转攻丝和自动反转退出工件工作。

Classical optical lever was improved with a carved vernier spider line in an eyepiece of the telescope to increase the precision of an optical lever and reduce the error.

为了提高光杠杆的精度，减小实验误差，对原光杠杆进行了改进，在望远镜的目镜中刻划了游标叉丝。

Trifolii were trans-fered into genus Microsphaera could not be agreed with.

trifolii转入叉丝壳属的分类观点。

Once it's there, you center it in the finder's crosshairs.

一旦它们出现在视场中了，把它们调至十字叉丝的中央。

Is it centered in the crosshairs?

它是否在十字叉丝的中央？

The result showed that the surface architecture and ultrastructure of I.punctatus ' gill and secondary gill lamellae were similar to those of other teleosts. The surface of gill arches and gill rakers was covered with pavement cells which were characterized by circular microridges, and secreting-holes were found among cells on the surface of gill arches. The base part of gill rakers were bigger in terms of diameter. The pavement cells' surface of gill filaments' middle part was characterized by microridges with fine lateral protuberances on both sides which were either fused or interruped, while the microridges disappeared on the pavement cells' surface on both top and base parts of gill filaments, forming dense granulated protuberances. The height and interlamellar space of secondary gill lamellae in I.punctatus were relatively higher and bigger, respectively.

结果表明，斑点叉尾鮰鳃的表面结构和微细结构与其他硬骨鱼类基本相似，鳃弓和鳃耙表面被具环形微嵴的扁平上皮细胞所覆盖，鳃弓表面细胞之间有孔洞；鳃耙基部较粗壮；中部鳃丝上皮细胞表面的微嵴两侧有细小的横突，有些微嵴出现融合或间断；端部和基部鳃丝上皮细胞表面的微嵴消失，形成密集颗粒状突起；鳃小片的高度和片间距较大。

Ternary" specializes were many points: One, braised big skirt fin, Taiye chicken, fried Health water lines, Xiehuang chicken wings for the three-ball "four specializes; specializes there Taiye chicken, stewed large Skirts fin, monolithic Serratula birds, flowers ice-shrimp, rich pomegranate chicken, Longfeng Yuanyang ball-Suzhaxieqian; point is a lard-British package, oyster sauce Chashao Bao, Kagemi egg tarts, mosaic egg Ji , Cellular Lai Kok taro, transparent chicken cakes, frozen Danjuan snow, the salt water shrimp Kok, Chashao Bao Yu Ye, Biaohua butter cake, and so on.

大三元&名菜名点繁多：其中，红烧大裙翅、太爷鸡、生炒水鱼丝、蟹黄鸡翼球为大三元&四大名菜；名菜还有太爷鸡、红烧大裙翅、铁板麻花雀、冰梅百花虾、富贵石榴鸡、龙凤鸳鸯球、香酥炸蟹钳等；名点则是架英猪油包、蚝油叉烧包、影美鸡蛋挞、马赛克蛋戟、蜂巢荔芋角、透明鸡蛋糕、雪花冻蛋卷、安虾咸水角、玉液叉烧包、奶油裱花蛋糕等。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。