牙形成

GC2281 Model long-arm cylinder bed two needle machine,with the synchronized feeding of needle、feed dog and presser foot prevents the slippage of materials and forms neat stitch;Adopt sliding thread take-up,importedvertical double rotating hookand forming two lines of lockstitch.

GC2281型长臂筒式双针机，具有针、牙、压脚同步送料功能，可防止缝料滑移，形成的线迹美观、整齐。

Then their structural characteristics,distribution and runnings were observed by light and scanning electron microscope.

在成牙本质细胞层下，血管网发出终末毛细血管网的动静脉分支，形成连续的环形的末端接触，构成了铸型最外部的细枝样结构。

Three natural whitening polishers; Bamboo Powder, Calcium Carbonate and Silica help prevent plaque build-up and are more gentle on your teeth than other whitening ingredients.

三重天然增白成分：青竹粉、钙和矽，有助于防止牙菌斑的形成，比具其他美白成分的牙膏跟温和。

Three natural whitening polishers; Bamboo Powder, Calcium Carbonate and Silica help prevent plaque build-up and are more gentle on your teeth than other whitening ingredients.

三重天然美白成分：青竹粉、钙、矽，有效防止牙菌斑的形成，比其他美白成分更加温和。

Within 30 months, small recognizable tooth crowns, containing complete bone-like dentin, a well-defined pulp chamber and even enamel, had formed

三十个月内就形成小小但已可辨识的齿冠，有完整的像骨头的齿骨质层，一个非常明显、确定的牙髓槽，甚至珐琅质。

Within30 months, small recognizable tooth crowns, containing complete bone-like dentin , a well-defined pulp chamber and even enamel, had formed.

三十个月内就形成小小但已可辨识的齿冠，有完整的像骨头的齿骨质层，一个非常明显、定的牙髓槽，甚至珐琅质。

Due to eccentric impeller is installed in the pump shell, and therefore water ring with tooth-shaped space between the leaves of different sizes.

又因叶轮是偏心安装在泵壳内的，因此水环与牙状叶片之间形成的空间大小不同。

This machine is one of the products of brand post bed series,which adopts top and bottom feed by needle bar feed dog,thread take-up sliding bar,thread catching by vertical rotating hook to produce double lockstitchl.

本机是高台机的系列产品。采用针杆摆动与送布牙同步送料的方式，滑杆挑线，立式旋梭勾线，形成双线锁式线迹。

Their jaw s and face form a sharp-toothed beak, and their body is encased in an armour of diamond-shaped, thick scales.

两颚与面部形成一个有尖牙的喙，鱼体覆以菱形光亮而厚的硬鳞。

AIM: To analyze the apoptosis and proliferation of HERS (Hertwig's epithelial root sheath) and to evaluate the roles of HERS cells in the development of cementum.

目的：观察牙根发育中上皮根鞘细胞(Hertwig's epithelial root sheath， HERS)断裂后结局和增殖凋亡相关基因的表达，探讨上皮根鞘在牙根发育特别是牙骨质形成中的可能作用。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。