两尖的

If the observer is at a great distance compared to the other dimensions of the experiment and the rays are nearly perpendicular to the reflecting surfaces, then the path difference between the two waves (corresponding to r1-r2 in the preceding section) is just twice the thickness d of the air wedge at each point.

如果观察者比起实验装置来讲距离较远而且光线较接近于垂直反射于表面，那么这两光波的光程差(在前面所述的相应部分 r1-r2)就仅仅是空气劈尖在该点处的厚度 d 的两倍。

The observer is at a great distance compared to the other dimensions of the experiment and the rays are nearly perpendicular to the reflecting surfaces, then the path difference between the two waves (corresponding to r1-r2 in the preceding section) is just twice the thickness d of the air wedge at each point.

如果观察者比起实验装置来讲距离较远而且光线较接近于垂直反射于表面，那么这两光波的光程差(在前面所述的相应部分 r1-r2)就仅仅是空气劈尖在该点处的厚度 d 的两倍。

The length, width, axial gradient for the crowns,the heigh of gingival line,the width of anterior dentition and the ratio of crista marginalis of their teeth were measured and analysed in their photographs and dental casts after orthodontic treatment.

测量关于正畸治疗后上颌第一前磨牙和对侧尖牙的龈缘线高度和牙齿形态的6项指标：龈缘线高度、临床冠长度、宽度、单侧前牙列宽度、轴倾度和近远中边缘嵴比，进行两均数配对t检验，观察分析两组的差异。

The symphysis is sectioned into two halves by malleting a spatula osteotome into the partially sectioned interdental osteotomy site.

唇皮层板和牙槽骨的水平以下的切牙根尖的切片，以第701号裂刺。切片的耻骨是分为两半的malleting一铲骨凿到部分切片间截骨网站。

The two grown children, a boy and girl, jumped off carrying harnesses and a bamboo cable and climbed to a path on the bank. Mother stayed at the rudder, steering, while father stood on the bow with a long bamboo pole with an iron point, which he used to prevent beaching or collision.

两个成年的孩子开始带上纤具和一条竹制缆绳爬上岸边的小路，妈妈在舵旁掌舵，爸爸拿着一根长长的带铁尖的竹槁站在船头，防止靠岸和碰撞。

So, that means The Eminem Show is essentially a holding pattern, but it's a glorious one -- one that proves Eminem is the gold standard in pop music in 2002, delivering stylish, catchy, dense, funny, political music that rarely panders (apart from a power ballad "Dream On" rewrite on "Sing for the Moment" and maybe the sex rap "Drips," that is).

Dre包办了，Eminem的制作功力明显有了提升，浓郁的摇滚式的音色运用和独特的编排让这张专辑的声音独具&白人味儿&，如果说前两张的Eminem只是一个牙尖齿利的说唱歌手，那么这张《The Eminem Show》之后我们可以放心地多给他一个&优秀的制作人&的称号了。

Therefore, the face-width of the face gear is limited. According to the conditions of undercutting and pointing, the formulae of minimum inner diameter and maximum outer diameter are derived for the shaft angle face gear .

根据产生根切与齿顶变尖的条件，给出了任意轴交角下齿宽设计的公式，定义了两个无量纲参数，即最小内半径系数和最大外半径系数，来表示齿宽的设计范围。

It will promote the progress of hole making thechique and accelerate the automatization course of the tool production in our country. In addition, the author analyzes a drill grinding unit on a machining center and present a new grinding model for grinding four-plane facet drill points, which will be a new way of drill grinder design.

此外，作者还分析了一台加工中心上的钻头刃磨装置，提出了一种两轴合成四平面钻尖的刃磨理论，并对其应用前景进行了初步探讨，为钻头刃磨方法和刃磨机的研制开辟了一条新的途径。

Carving glaze is a porcelain body, Sincere on white or black glaze, and then press the pattern with the sharp tool to outline the contour shape and petal leaf ribs, crossed pattern outside the space, exposing porcelain body, Shi layer of thin transparent glass glaze , into the kiln firing, glaze formation of black and white tires and a strong color contrast.

雕釉是在瓷胎上先施白或黑釉，然后按花纹用尖状工具勾划出轮廓线和花瓣叶筋，划掉花纹以外的空间，露出瓷胎，施一层薄而透明的玻璃釉，入窑烧制，形成胎和釉黑白两色的强烈色泽对比。

Also desirable seat, fingertip on the use of Baihui, two thumb-side, respectively, according to the rate of Valley Point (耳尖straight Division II cross-refers to), his hands at the same time for pre-and post-揉动, forced to be uniform, not too strong or too weak, There Pinggan Qianyang role.

也可取坐位，用中指端放在百会穴，两拇指端分别按在率谷穴，双手同时作前后的揉动，用力要均匀，不宜过强或过弱，有平肝潜阳的作用。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。