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bit
相关语句
  钻头
    The Study on Wear Regularity, Design and Performance Test of Diamond Bit and Diamond Saw
    金刚石钻头和金刚石锯片磨损机理、设计及性能测试研究
短句来源
    THE DESIGN FEATURE OF MODEL X74-310 ROTARY BIT AND IT'S APPLICATION
    X74-310型硬岩三牙轮钻头的设计特点及应用效果
短句来源
    Study of Tooth Fixing Technique for Hard Alloy Bit
    硬质合金钻头固齿工艺的研究
短句来源
    XM84-165 ROTARY BIT FOR UNDERGROUND MINING
    XM84-165型地下矿用三牙轮钻头
短句来源
    Discussion of wearing mechanism for drilling bit
    凿岩钻头磨损机理的探讨
短句来源
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  “bit”译为未确定词的双语例句
    STUDY ON YS CYLINDRICAL TUNGSTEN CARBIDE INSERT BIT
    YS型柱齿钎头的研究
短句来源
    Kinematic Analysis of Milling-type Rect-shank Bit
    铣削式扁截齿运动学分析
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    An Experimental Study of the Optimal Jet Position on Water Jet Assisted Drag Bit During Rock Cutting
    水射流辅助切削刀具破岩的最佳位置的实验研究
短句来源
    Test and study on High Hard Abrasive Coating Bit
    高硬耐磨涂层截齿的试验研究
短句来源
    Finite element stress study on radial bit failure
    扁截齿失效的有限元应力分析
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  bit
Experimental results show that the proposed approach can reduce the computational cost of full search and fast multi-block motion estimation by 80 % and 45 %, respectively, with similar visual quality and bit rate.
      
The proposed algorithm also reduces by 75 % the computational cost of the large-small mode isolation algorithm for low-motion sequence coding, and with 0.06 PSNR gain and 3.7 % reduction in bit rate.
      
In underwater acoustic communication, because the available bandwidth of the channel is severely limited, the direct-sequence spread-spectrum scheme can only be realized at low bit rates.
      
The bit error performance is correlative not only with the interference-signal ratio (ISR), the frequency offset and the phase of the CW interference sensitively, but also with the individual spread spectrum code sequence.
      
DCT_M model for excitation parameter in low bit rate vocoder
      
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The short life of drill string is mainly caused by premature fracture of steel rod and the failure of tapered shank of bit due to expansion.In this paper, the determination of the longitudinal stresses of steel rods and the expansive loads acted upon the tapered shanks of bits is described. The determination is conducted in a series of drop-hammer tests in 6 different types of media, including steel anvil,hard taconite, lead block, rubber, sand and free air, under simulated working condition of a rock...

The short life of drill string is mainly caused by premature fracture of steel rod and the failure of tapered shank of bit due to expansion.In this paper, the determination of the longitudinal stresses of steel rods and the expansive loads acted upon the tapered shanks of bits is described. The determination is conducted in a series of drop-hammer tests in 6 different types of media, including steel anvil,hard taconite, lead block, rubber, sand and free air, under simulated working condition of a rock drill. For YT-25 drill, the max. longitudinal stress in drill steel amounts to 5300-6000kg/cm2. By analyzing the aforementioned measurements and computations, a theoretical basis for the selection of materials and heat-treatment procedures of drill steels and drill bits is proposed.

钎头、钎杆早期折断和胀裤是目前钎具寿命不高的主要原因。作者在模拟凿岩机工作条件的落锤试验台上,对六种介质(钢砧、坚硬铁矿、铅、橡胶、河沙以及悬空等)测定了钎头、钎杆的轴向应力和胀裤力。对于YT—25型凿岩机,钎杆中最大轴向应力可达5300~6000公斤/厘米~2。根据测定结果,本文提出了分析意见,为钎杆和针头选材和制订热处理工艺提供了依据。

The impact stress waveform of percus- sion rock drill not only determines the penetration rate but also influences the life of piston, steel and bit. Based upon the study on the Down-the-Hole drill J-100, the paper presents a method and some experiences of prolonging the piston life by improving the waveform of the impact stress.

冲击应力波形不仅决定了岩石破碎效果,而且影响到钻具使用寿命。本文根据J—10O潜孔冲击器的研究,介绍了改善冲击应力波形、提高冲击器活塞寿命的方法和经验。

The force characteristics of the bit body were investigated, and its static and dynamic stresses were measured. The measured results shows that the damage of the bit body was mainly caused by tangential stress. The basis was provided for correct selecting the steel types of the bit body and working out reasonable technology according to this conclusion.

本文研究了小钎头体受力的情况及其静态和动态的应力测定。测定结果表明,钎头体主要是由切向应力引起账裤破坏。这个结论为钎头体正确选用钢材和制订合理的加工工艺提供了依据。

 
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