Lengthening the width of isolated fully mechanized top coal caving face would reduce the abutment pressures for both wide and small coal pillars, and the coal pillar width could be reduced. 加长孤岛综放工作面长度,护巷大煤柱和小煤柱的支承压力均减小,可以减小护巷煤柱宽度。
The peak value of abutment pressures on coal pillar had a certain distance to the wall, and the distance reduced when the working face width increased. 煤柱支承压力峰值超前煤壁一定距离,且此距离随工作面长度加大而减小。
Also, to accelerate the pitting process the face width of the pinion employed was half that of the wheel. 此外,为加快点蚀过程中的小齿轮面宽度雇用了一半,该轮。
Traditionally, computer face recognition is based on such factors as the characteristics of the eye region, the shape of the nose, or the width of the mouth. 传统上,用计算机进行人脸识别是基于局部区域的特征例如眼睛、鼻子的形状,或者嘴巴宽度等。
The working face mining distance can decrease when fracture occurs and the mining width increases. 当工作面宽度加大时,开始出现破裂的工作面推进长度减小。
Decreasing the bearing face and increasing the tread are two effective measures to increase the lateral stability. But with the bearing face becoming lower and the tread becoming broader, the minimum turning radius and the maximal gangway width will increase too. 降低承载面和增加轮距是提高横向稳定性的有力措施,但太低的承载面和过宽的轮距将会增大最小转弯半径和最大通道宽度。
Method According to the appearance of the face and X-ray, several operations were used to reduce the width disparity of the bilateral sides and to rectify the asymmetry of the face. 方法根据第一、二鳃弓综合征患者临床及X线所示面部双侧不对称情况,采用健侧下颌骨外板去除、颧骨截骨降低;
The postbuckling behavior calculation method of the compressed face in sandwich panels with the profiled steel faces is to replace the buckling coefficient of Winter effective width formulae by a buckling coefficient of the thin-walled single plate element supported by the foam core by energy method. 用根据能量法求得的泡沫芯层支承下的薄壁金属单板的屈曲系数K,代替Winter有效宽度公式中的屈曲系数,导出了压型表面夹层板受压面层屈曲后性能的计算公式;
Effects of seal face width on mechanical seal performance 机械密封端面宽度对密封性能的影响
Conclusion IPL in treating face splash capillarectasia and skin consenescence was efficient and safely. We find in clinical that the rational using energy, pulse width, impulse and impulse alternation could effect the impression. 结论:IPL治疗面部色斑、毛细血管扩张及改善皮肤衰老状态有效、安全,且能量、脉宽、脉冲、脉冲间隔的应用影响治疗效果。
Another important obstacle that high power electronic equipment must face is that the large power device can't work at high frequency, so it's difficult to use good modulation technique such as Pulse Width Modulation ( PWM). 在大功率电力电子装置中的另一个重要的问题就是大功率器件的工作频率较低,难以应用PWM等优秀的调制技术。
In addition, the ratio of head length to middle face width, upper face to lower face, head width to mandibula width, as well as geometric structure of low face must be considered in individual mandibular diagnosis and surgery. 而在对个性化下颌角诊断及治疗中需要结合头面、面中、头颌宽比及下面部形态综合考虑。
The generating principle and grinding method of the rotary burrs flutes with plane curve cutting edge. plane rake face and margin width equal to zero are proposed in this paper. 本文提出了一种直接磨削出具有平面曲线刀刃、平面前刀面及刃带宽度等于零的模具铣刀齿槽的原理与方法。
Objective: Studied magnetic fied of end on open electromagnet. Effects of seal face width on mechanical seal performance 对开路电磁体的端面磁场进行了研究。机械密封端面宽度对密封性能的影响
Design of Oscillating Flat face Cam Mechanism with Constant width Cam 平底摆动从动件等宽凸轮机构的设计
The same speed ratio distribution and different face width factors have effect on the parameters of speed reducer. 相同的速比分配不同的齿宽系数对减速器参数的影响;
In addition, because sports news page is limited, the sports news report will face some restrictions whatever in reports 'width, depth, perspective and so on. 此外,由于体育新闻版面有限,《人民日报》体育赛事报道无论在报道深度,报道广度,报道视角等哪一方面的提高都受到限制。
Based on ANSYS, the meshing stiffness of orthogonal face gear was researched, including the influence of tooth width, the modulus and the pressure angle. 基于ANSYS对正交面齿轮传动的啮合刚度进行了研究,分析了主要设计参数对啮合刚度的影响。