查询词典 third root

The areas of root concavity in most of teeth will cover the cervical third and middle third of the root.

大部份的牙齿其牙根面凹陷的范团均涵盖了齿颈部及中央三分之一的牙根。

Studied present measuring methods" advantages and disadvantages, and presented the necessity and importance of researching propellant transient heat transfer.2.according to 130 and aeronautic 90 rocket projectiles" structure, analysed and acquired physical and mathematical models for propellant transient heat transfer, also designed propellant temperature field simulation units for test.3.acquired discrete transient heat balance equation and temperature calculation program, and gave contrasting curves between experimental temperature values and program calculating temperature values as well as maximum errors and average square root errors between them.4.by programs based on the first class boundary condition, worked out temperature distribution in propellant temperature field simulation units at different time, analysed temperature field distribution law and main elements affecting heat transfer, acquired propellant mass weighted average temperature and one at the half position of propellant maximum thickness as well as maximum errors and average square root errors between them.5.established transient heat transfer mathematical model and temperature calculation program for the third class boundary condition, drew contrasting curves between temperature experimental values and calculation values and gave maximum errors and average square root errors between them, got temperature distribution in the simulation unit at different time and main elements affecting heat conduction, figured out propellant mass weighted average temperature and one at the half position of propellant maximum thickness as well as maximum errors and average square root errors between them.

分析了现有测试方法的优缺点，提出了研究推进剂瞬态导热的必要性和重要性。 2。根据130和航90两种火箭弹的结构，分析得到了推进剂传热的物理模型和数学模型，设计了推进剂温度场模拟实验装置。 3。得到了离散形式的瞬态热平衡方程和温度场计算程序，给出了实验温度与程序计算温度值的对比曲线及其最大偏差与均方差。 4。利用程序求出了第一类边界条件下、不同时刻推进剂温度场模拟装置中的温度分布，分析了温度场的分布规律和影响传热的主要因素，求出了推进剂质量加权平均温度和最大肉厚1／2处的温度时间曲线并给出了两者之间的最大偏差与均方差。 5。建立了第三类边界条件下的瞬态导热数学模型和温度计算程序，求出了温度实测值与计算值的对比曲线并给出了两者之间的最大偏差与均方差，得到了不同时刻温度场模拟装置的温度分布与影响导热的主要因素，求出了推进剂质量加权平均温度和最大肉厚1／2处温度及两者之间的最大偏差与均方差，讨论并确定了能代表130和航90推进剂温度的特征点的位置。

The additional third root in permanent mandibular first molar variants that have three roots is typically distributed lingually.

二十岁台湾女性在左侧下颚第一大臼齿有一断裂K3镍－钛牙锉针在其远心舌侧根管。

Results: There were 2 cases found distal third root canals among 172 cases of the lower first molars.

结果：172例下颌第一磨牙中发现远中第三根管2例。

I have to use a sick in the morning to get up the first cigarette in his hand playing a few times a break, and then slowly twist into Suimo, the second root, third root....

我必须使用早晨一起床病人在他手中的第一支香烟扮演休息几次，然后慢慢地Suimo，第二根，第三根扭曲。。。。

Objective: To observe if there is the existence of a third root canal in the distal root of the mandibular first molar so as to avoid the clinical treatment of mandibular first molar root canal in the distal root left to provide guidance.

目的：观察下颌第一磨牙远中是否存在第三根管，以期为临床治疗中避免下颌第一磨牙远中根管的遗漏提供指导。

The existence of the distal third root canal in the lower first molar, which increased by the emergence of root canal missed chances in the clinical treatment, so it is very important to double-check the number of root canals when operating root canal treatment.

下颌第一磨牙远中第三根管的出现增加了临床治疗中遗漏根管的机率，因而根管治疗时对根管数目的仔细检查非常重要。

Blasvatsky placed her 'Third Continent of the Third Root Race' to inhabit planet Earth - in the Indian Ocean between Madagascar and Malaysia existing 150 million years ago.

布拉瓦茨基把她的书"种族的第三根源——第三大陆"放置在地球行星的居住者上——在马达加斯加和马来群岛之间，存在于150百万年前。

Then the alveolar bone of model 1 was lowered to respectively construct Model 2(Bone loss was one fourth of the root), Model 3(Bone loss was one third of the root), Model 4(Bone loss was the half of the root), Model 5 (Bone loss was the two third of the root) and Model 6 (Bone loss was the three fourth of the root).

在模型1基础上，将牙槽骨骨高度分别删除1层、2层、3层、4层、5层(使处理后的牙槽骨骨高度与牙根长度之比由1：1变为3：4、2：3、1：2、1：3、1：4)，产生模型2、模型3、模型4、模型5、模型6，代表五种不同程度的牙槽骨骨吸收模型。

The wall of lased 15s or 30s were fused,removed smear layers and sealed dentin tubules.Laser's effects on middle and apical third root canals were pronouced than that of coronal third and had no damage.

结果 激光照射15秒和30秒组根管壁呈熔融状态，去除了玷污层，牙本质小管封闭和半封闭，未见对牙体硬组织的损伤。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。