This paper introduced the application of new Hall sensor in the voltage and current regulation of the speed-regulation system of rotary three-cone bit drill and analyzed the mode of operation, the structural characteristic and the use result of the component element.

1、

The paper gets a conclusion that the patterns of breaking rock are not only concerned with the pressure of three-cone bit but also relating to the rotating speed of the bit.

得出了钻机的破岩形态不仅与轴压有关，而且还与钻机的转速有关的结论。

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2、

Analytic expression for scoop-shaped tooth surface of three-cone bit and its integration processing

三牙轮钻头瓢形齿齿面结构的空间解析式及积分处理

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3、

Simulation model of drilling process of three-cone bit

三牙轮钻头破岩过程计算机仿真模型

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4、

CAD System Design for Three-cone Bit Based on AutoCAD

基于AutoCAD的三牙轮钻头CAD系统设计

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Research on the Feature Recognition System for Three-cone Bit

三牙轮钻头特征识别系统的研究与开发

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Study on the Three-Component Chromogenic Reaction System of Cu(ⅱ)-CAS-CPB and Its Analytical Application

铜（Ⅱ）-铬天青S-溴化十六烷基吡啶三元显色体系的研究及应用

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7、

Since Wright presented the three-component psychological system in the field of transitivity inference, the model has come to be one of the focuses in the transitivity inference researches. This article chiefly introduces its theoretical background, basic hypotheses and structure.

自Wright在传递性推理的研究中提出三成分心理系统模型以来，该模型理论成为了传递性推理领域研究的热点。

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The replacement of the two-component cropping system by the three-component cropping system ( TCCS) had been a inevitable trend of the development of modern Chinese agriculture.

三元种植结构取代二元种植结构是我国现代化农业发展的必然趋势。

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9、

Reliability Analysis of Three-component Remanufacture System

三部件可再制造系统的可靠性分析

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Factor analysis-UV Spectrophotometry was used simultaneously to determine the contents of a three-component system consisting of pyrocatechol, resorcinol and hydrochinone. The method was simple and fast, with a recovery of 93. 52~ 107. 20% and an average percentage error of 2.17%.

本文运用因子分析-紫外分光光度法同时测定邻苯二酚、问苯二酚和对苯二酚三组份含量，方法简单快速，回收率93.52～107.20%，平均百分误差2.17%。

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The resulting three-component system exhibited an anatase/ rutile ( weight ratio of 73.8/ 26.2) mixed phase structure, narrower band gap ( 2.25 eV), and extremely small particle sizes ( ca. 12 nm) with metallic Ag particles well-distributed on the surface of the composite.

所得三元体系为锐钛矿与金红石混合晶相结构，锐钛矿相与金红石相质量比为73.8/26.2，带隙能窄化到2.25eV，Ag纳米粒子均匀分散在粒子尺寸约为12nm的复合物表面。

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12、

The separation of three-component system of cyclohexane, cyclo-hexene and benzene by extract rectification with a mixed solvent, comprising hexyl dicyanide and dimethyl acetylamine has been studied.

选用己二腈-二甲基乙酰胺组成的混合溶剂，对环己烷、环己烯和苯组成的三元体系进行了萃取精馏。

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13、

仿照相图的作法，本文对等温三元均相反应提出了一种反应图。

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The activities were calculated from three-component system phase diagram with two component congruent compound, using fusion free energy of component.

利用熔化自由能，由具有同分熔点二元化合物的三元系相图计算活度。

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Study on the Solubility of the Three-Component System KCl-NH_4Cl-H_2O

KCl-NH4Cl-H2O三元水盐体系溶解度的研究

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16、

Three-component geophone array broadside seismic reflection profiling

三分向地震检波器台阵侧向地震反射剖面法

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Characteristics of three-component mixing of oceanic basalts and three-layer mantle structure model

大洋玄武岩的三元混合特征及地幔的三元结构模式

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Polarization analysis of three-component array data

三分向台阵数据的偏振分析

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Seismic data damage due to polarity inversion of 54 ° three-component geophone

54°三分量检波器极性反转对地震记录的影响

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Three-component zoom lens appeared in this form to be some need.

三组元变焦目镜就是在这种形式下出现的。

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