前牙

AIM:To enhance the dentists to realize the presence of two root canals in the mandibular first premolars.

目的 ：提高临床医生对下颌第一前磨牙存在双根管的认识。

METHODS: Human premolars were collected and embedded in paraffin and cut into slices.

收集人前磨牙，石蜡包埋切片，作免疫组织化学和图象定量分析。

OBJECTIVE: To evaluate the fatigue resistance of lower premolars restored with quartz-fiber post-core and full crown.

目的：评价石英纤维桩复合树脂核全冠修复的下颌前磨牙的疲劳抗性。

The first four Yankees batters of the game reached base and scored, and backup catcher Wil Nieves got his first hit of the 2007 season in the sixth inning -- his first in the Major Leagues since 2002 with the Padres.

在这场比赛中洋基的前四棒努力的上垒及得分，而第一号候补捕手尼安凡斯也在六局下半击出了他在这个球季的第一支安打--他在大联盟出赛中的第一支安打是在2002年出战圣地牙哥教士队。

Methods:Thirty extracted mandibular first premolars with only one root canal and root-canal curvatures between 13° and 38.5° were divided into three groups.

材料与方法：选用山东大学口腔医学院口外门诊拔除的下颌第一前磨牙(单根管、根管弯曲13°～38.5°)。

Sheet-fed flat die-cutting relies on the syndiospecific side of the former gauges, mechanical positioning, and the development of an on-line die-cutting relies on the business card printing and membership card making tagging, and do not pick out the paper teeth, in order to achieve wheel system transformation cards and membership cards of consecutive paper making unit to die-cutting-intermittent motion changes, often feeding Assembly set up an eccentric mechanism djustable.

单张纸平压平模切是依靠前规、侧规机械定位的，而联线平压平模切是依靠制卡和会员卡制作标记定位的、且没有叼纸牙排，为了实现轮转制卡和会员卡制作单元纸张的连续传到模切工位的间歇运动的转变，通常在给纸装里设置一个可调的偏心机构。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。