On the termination date, the cultured explants were all examined by Western blot, HE and transmission electron microscope. Our results showed that after 12-days in culture, the cultivation treated with AS-ODN reduced the synthesis of AMBN and had a deformed dental cusp with thinner enamel matrix. Ultrastructure analyses showed that there was hardly any cisternae of the rough endoplasmic reticulum in the ameloblasts at the tip of the cusp of AS-ODN treatedexplants. However, on average the enamel matrix was thinner compared with that in the control group. Furthermore, the collagen fibers in extracellular matrix were found disorganized. These findings seemed to provide a direct experimental evidence that tended to indicate that the arrested AMBN translation in cultured tooth germs might result in the delay of the tooth development.
经用Western蛋白印迹检测表明，所设计的反义核酸对AMBN InRNA具有良好的封闭效果并成功阻断了牙胚对AMBN的表达；在缺乏AMBN情况下，与对照组相比，实验组牙胚在体外可以继续生长发育至钟状晚期，出现成釉细胞和成牙本质细胞的分化，成釉细胞可以分化成为分泌期型成釉细胞，胞浆中缺少合成蛋白质所必需的粗面内质网和高尔基氏体，缺乏溶酶体，表明对蛋白合成和脚的能力降低；实验组牙胚有牙尖形成和基质分泌，但牙尖形态异常，基质形成减少，牙尖周围基质最厚处为O.6卜m，明显薄于对照组的5.spin，基质中胶原纤维粗细不等，排列稀疏，3 第四军医大学硕士学位论文未见钙化现象，充分证明了AMBN在牙胚发育中参与釉质基质形成和矿化过程，影响胶原纤维和牙本质基质的合成，促进成釉细胞对蛋白质的合成和釉质基质蛋白降解。
To avoid the non-uniform tooth profile allowance in gear rough machining with a single disk milling cutter, a gear rough machining method with a double disk cutter is presented, resulting in improved efficiency and uniform tooth profile allowance.
针对单盘铣刀齿轮粗加工中齿廓余量不均匀问题，提出了一种效率高且齿廓余量均匀的双盘铣刀齿轮粗加工方法。
Go over your finished rough draft with a fine-tooth comb and clean it up as much as you can.
把你完成的稿子用一个”细齿梳子“来检查，尽可能”打扫干净“。
Piezoelectric ultrasonic scaler scaling across the tooth surface could make the surface rough. Surface roughness would increase as the scraping frequency with ultrasonic scaler was increased too. b. After ultrasonic scaling operation the polishing must being carried.
结论：1.压电陶瓷式超声洁治器在牙面划过会使牙釉质表面粗糙，粗糙程度随洁治器划过次数的增多而增加。
There was none to bring it except the little messenger of the fields with his rough green coat, the dandelion – this lion's tooth, as the French call him.
除穿着粗陋绿衣的田野信使蒲公英（法国人把它叫作狮子的牙齿）之外，还有谁会来传递春天的消息呢！
Firstly, the rough point cloud data of impacted tooth and jaw are obtained using MIMICS based on CT scan data. Secondly, the precise characteristics of the model are extracted using VC++ self-compiled program, which are imported into CATIA to get the CAD model of the impact tooth, the periodontal ligament and the jaw. Finally, the contact analysis is done by ABAQUS for the orthodontic traction of which the angle to the central long-axis of the impacted tooth are 0°, 45°and 90°, and the stress and its distribution of the periodontal ligament in clinical orthodontic is calculated.
首先基于病例CT扫描数据，利用MIMICS软件获取粗糙的埋伏牙及颌骨点云数据；然后采用VC++自编程序自动提取精确的模型特征，并导入CATIA中生成埋伏牙、牙周膜及颌骨CAD模型；最后运用ABAQUS对与埋伏牙的牙体长轴成0°，45°及90°等3种方向的正畸牵引方式进行接触分析，得出正畸临床状态下的牙周膜应力大小及分布。
However, most of the gear transmission mesh in the mixed lubrication state, that is, the lubricant film and the direct collision of the rough peak exist between two contact tooth surfaces, there is an obvious difference with the Hertz theory.
然而，绝大部分齿轮传动都处于混合润滑状态，即在两接触齿面之间既存在着将其分开的润滑油膜又存在着直接碰撞的粗糙峰，这显然与Hertz理论有很大的区别。
To avoid the saddle-backing on the tooth root, the undercutting problem in the rough-plane process should be solved before heat treatment process.
为避免在精加工后齿形根部留有凸台，在热处理前的粗加工时，就应该解决“根切”问题。
Second, based on the work mentioned above and the simple two sides cutting method about the tooth profile, the installation parameters in cutting tooth process were computed, the parameters of the cutter position and cutter angle of both rough and refined process were also obtained.
其次，在上述工作的基础上，根据简单双面法加工原理，进行刀盘安装参数计算，得到齿轮粗加工和精加工的刀位和刀位角参数。
By combined calculation with drawing, a design method of tooth profile of rough milling cutter for straight bevel gears is introduced. The precise calculating formulae are deduced, the calculating steps and drawing method with a computer are expatiated, and a design example is presented.
介绍了一种计算与作图相结合的直齿锥齿轮粗铣刀齿形设计方法，推导了精确计算公式，详述了计算步骤和计算机作图方法，并给出了设计实例。
By combined calculation with drawing, a design method of tooth profile of rough milling cutter for straight bevel gears is introduced.
介绍了一种计算与作图相结合的直齿锥齿轮粗铣刀齿形设计方法，推导了精确计算公式，详述了计算步骤和计算机作图方法，并给出了设计实例。
Design and Calculation Method of Tooth Profile of Rough Milling Cutter for Straight Bevel Gear
直齿锥齿轮粗铣刀齿形的设计计算方法
Bulk volume of the volume of block block block caliper micrometer-specific block, such as special types of straight shank drill bits Serratula straight shank long twist drill set, such as alloy straight shank twist drill reamer type of hand reamer straight shank straight shank machine reamer taper shank machine reamer and other types of coarse tooth cutter straight shank cutter tooth taper shank Rough Milling fine-tooth cutter straight shank end mill, such as hand-tap machine tap tap tap left teeth straight pipe tap, such as garden die die die left teeth straight pipe die die US-made of other alloys such as Alloy blade machine Segment saw blade, such as gear type inverted roller gear Gear planing cutter knife disc-shaped gear gear shaper cutters, such as factory outlets: cast iron flat, square boxes, granite slab, square and so on.
量块 散量块卡尺专用块千分尺专用块等钻头类直柄麻花钻直柄长麻花钻镶合金直柄麻花钻等铰刀类直柄手铰刀直柄机用铰刀锥柄机用铰刀等铣刀类粗齿直柄立铣刀粗齿锥柄立铣刀细齿直柄立铣刀等丝锥手用丝锥机用丝锥左牙丝锥直管丝锥等板牙园板牙左牙板牙直管板牙美制板牙等其他合金刀头合金刀片机用锯条等齿轮倒类齿轮滚刀齿轮刨刀齿轮铣刀盘形插齿刀等厂家直销：铸铁平板、方箱、花岗石平板、直角尺等。