The invention discloses a formulation of the nano composite material of a bit tooth, which is used for improving the life of the air percussion bit tooth.
本发明公开了一种钻头牙齿纳米复合材料的配方，该发明用于提高空气冲钻钻头牙齿的寿命。
Steel tooth bit can increase the bit's stability and lower the tooth impact load, and enhance its wear resistance.
钢齿牙轮钻头增强了工作的平稳性，降低了牙齿的冲击载荷，使牙轮钻头的耐磨性能得到提高；
Like the old metal-wrapped tooth paste with the rusty and moldy fragrance, the memory is squeezed out bit by bit and presented to us in the form of paintings.
记忆如同一管陈旧的老式铁皮牙膏管里的牙膏一样，带着锈味又带着发霉的清香，被作者一点一点地挤了出来，并通过画面呈现给了大家。
The single tooth cutting course of a PDC drilling bit is studied. The research is of great significance for improving PDC drilling bit design.
为了改进PD C钻头设计，在全尺寸试验的基础上，对PD C钻头单齿切削过程进行了试验研究。
This is a little bit like asking if Santa is real... of course the tooth fairy is real!
这就好比问圣诞老人是真的么…当然真的有牙仙了！
There are many factors influencing the bit diameter and the tooth row intermesh due to the complicated shapes of the main parts of a three cone bit.
三牙轮钻头主要零件形状复杂，影响钻头直径及牙轮齿圈啮合误差的因素较多。
Insert tooth bit applies in every serious geography especially hard rock; it has stable drilling speed and can drill the hardness of rock at 1-6 grades.
镶齿牙轮钻头主要适用于地质较硬的岩层，它钻进速度稳定，可以钻进1-6级地质硬度，适用于各种恶劣的地质环境。
The invention provides a tooth row with a swinging device, which is characterized by comprising a tooth row, a cam bit and a swinging device.
一种有摆动装置的牙排，其特征在于它包括牙排、凸轮块和摆动装置；
Mary is a bit long in the tooth to play the part of a young girl.
玛丽扮演少女的角色年纪未免太老了点。
This paper attempts to use the parameter estimation method to backward calculate tooth-rock sample interaction mathematical model according to some bit bench test data.
本文尝试用参数估计的方法，依据一些钻头台架试验的数据，来反求牙齿-岩样互作用的数学模型。
The revertex mechanical bit general many are the heterogeneous bit, mainly has each kind of tooth profile even Yuan Dao and the strip forming tool.
塑胶机械刀片一般多为异型刀片，主要有各种齿形平元刀及条型刀。
Along with the oil prospecting and production, the existent drilling bit (steel and tungsten carbide tooth bit) was not effective in some complicated stratum.
随着油气勘探开发的不断深入，现有牙轮(钢齿、镶齿)钻头已难以对一些复杂地层进行有效的钻进。
Along with the oil prospecting and production, the existent drilling bit (steel and tungsten carbide tooth bit) was not effective in some complicated stratum.
随着油气勘探开发的不断深入，现有牙轮(钢齿、镶齿)钻头已难以对一些复杂地层进行有效的钻进。
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