一定要使你的舌头接触下齿的背面。
Make sure that your tongue touches the back of the lower teeth.
也被称为下颌，下颌的房屋下齿。舌和唇还骑在下颌骨。
Also known as the lower jaw, the mandible houses the lower teeth. The tongue and lower lip also ride on the mandible.
通过舌面与上齿共同作用强迫气流略过舌面，气流在进入下齿后面时发出声音。
The sound is created by the tongue working with the upper teeth to force air over the surface of the tongue and into the lower teeth.
你可以付通行费开车上派克斯峰公路，或者放松一下，乘坐派克斯峰齿轨式火车。
You can pay a toll to drive on Pike's Peak Highway or relax and take the Pike's Peak Cog Railway.
具体而言，在没有父亲的陪伴下被抚养长大的八齿鼠幼崽在眼窝前额皮质和躯体感觉皮质上都具有较少的神经突触。
Specifically, the degu pups raised without fathers had fewer synapses in both the orbitofrontal cortex and the somatosensory cortex.
裂齿，食肉齿适合于撕裂肉的牙齿，尤指食肉哺乳动物最后上前臼齿之一或第一个下臼齿。
A tooth adapted for tearing apart flesh especially one of the last upper premolar or first lower molar teeth in carnivorous mammals.
通常情况下，60齿，16-沥青齿轮转速的测量提供了最佳的特点，但其他类型渔具，可以为特殊应用的需要。
Typically, 60-tooth, 16 - pitch gears provide the optimum characteristics for RPM measurement, but other gear types can serve special application needs.
指出在具有径向柔性机构的情况下，该防自转机构和涡旋盘齿的磨损具有同步性和自动补偿性。
It is pointed out that, in the case of having radial flexible mechanism, the wear between anti rotation mechanism and scroll wrap exhibits synchronism and self compensation.
采用白光数字散斑相关的方法，观测截齿截割作用下的煤体变形破坏情况。
To adopt white light digital speckle correlation method, so as to observe the coal body's deformation and destruction law in pick cutting course.
方法用铝板制作相同坡长不同齿坡角的钥匙模型，在相同夹持方式下模拟增配过程，观察并总结钥匙上仿形刀痕迹倾斜角度的变化。
Methods Similated to duplicate model keys in sameness nipping manner, then observe and summarize the slope angel of profile modeling reamer trace how to change.
齿及此事，我不得不重申一下我的观点。
对截齿截割煤体变形破坏过程的红外热像进行测量和研究，从而分析研究截齿截割作用下煤体变形破坏规律。
To make measure and research on the infrared hot image in the deformation and destruction course under the function of pick cutting in order to analyze the deformation and destruction law.
测量结果表明，在极低速状态下，仪表齿轮齿面间的摩擦系数几乎与齿面间的作用力无关，但随齿面相对滑动速度的增加而线性增加。
Results show that the frictional factor almost has nothing to do with applied forces, but increases linearly with the sliding speed between the tooth faces.
本文的方法还可用来分析优化齿面的曲率修正参数，以及误差作用下的齿面接触情况。
Also this method can be used to optimize the parameters of modified worm gear drive and analyse the contact condition under errors.
研究结果表明，含有锥齿电极结构的电极放电相对均匀、稳定，且在相同的外加条件下具有更高的功率注入效率。
It is shown that, the configuration consisting of cone electrode is relatively homogeneous and stable which has higher power input efficiency under the same applied voltage.
使用修改移植的MCSAP有限元分析程序对某高速弧齿锥齿轮进行了离心载荷下的变形和应力的分析。
MCSAP program was applied to the finite element analysis for the stress and deformation of a high-speed Gleason spiral bevel gear under centrifugal load.
在地层、钻井参数和钻头新度相同的情况下，钻头机械钻速的快慢主要取决于钻头齿面结构是否合理。
While drilling in the same formation with the same drilling parameters, the penetration rate of bits of the same degree of wear depends mainly on their cutting structures.
在齿层区域有永磁体材料存在的情况下采用标量位求解，并用有限元法计算齿层磁场。
A scalar potential is introduced and finite element method is used to solve the tooth layer magnetic field problems.
本文在极低速情况下，模拟测定了仪表齿轮在一齿啮合过程中两齿轮齿面间摩擦系数的变化情况。
The friction factor between two tooth surfaces of instrument gears during one meshing process is imitatively measured in this paper under the condition of ultra-low-speed.
刮刀的齿不能过度损坏，上述粘胶用量指刮刀崭新情况下的用量，涂胶量以现场实际为准。
The teeth of blade can not been excessive damaged. The above usage of glue depends on the teeth quality. Amount of glue based on actual site condition.
该机以一根立轴联接螺旋板齿脱粒滚筒、上排杂风扇和下轴流风扇，并驱动其旋转。
The helical plate tooth threshing cylinder, the top thresh fan and the undershot fan are connected and driven by a vertical shaft.
定钻压、定转速条件下的单切削齿磨损速度试验结果表明，切削齿的线磨损模式是正确的。
On the basis of analyzing cutting mechanisms of cutters, a linear wearing speed model is established by researching the abrasive law of cutters.
得到了系统在不同的输入转矩波动、齿侧间隙、齿轮综合误差、激励频率和阻尼比参数下系统的全局特性。
The system's global characters are obtained under different input torque fluctuation, backlash, composite transmission error, exciting frequency and damping ratio.
研究在单点激振情况下阻尼套筒对蓖齿封严结构的减振规律。
The shock absorption rule of labyrinth assembly under single-point excitation force is researched.
在齿轮热滚挤加工中，轮齿上的金属在强制挤压力的作用下沿齿面产生塑性流动，使齿形发生变化。
During ausform finishing process of hardened gears, there is plastic displacement of metal on the tooth surface and the distortion of tooth profile.
在此情况下，齿数为输入的参数。
对直齿面齿轮传动在考虑边缘接触下的承载接触进行了分析。
The loaded tooth contact ana-lysis(LTCA) under the condition of tooth edge contact is investigated in this paper.
研究齿接触半环抱钢板对骨折局部钢板下皮质骨血供的影响。
To study the influence of the tooth contact half cycle (TCC) steel plate on cortical bone blood supply at the fracture site.
因此，在齿面非正常接触导致齿顶接触应力过大的情况下，该齿轮发生了早期疲劳剥落。
Due to the above mentioned defects, early fatigue peeling occurs under the condition of overly contact stress at the top of the tooth caused by abnormal contact at the tooth surface.
因此，在齿面非正常接触导致齿顶接触应力过大的情况下，该齿轮发生了早期疲劳剥落。
Due to the above mentioned defects, early fatigue peeling occurs under the condition of overly contact stress at the top of the tooth caused by abnormal contact at the tooth surface.
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