介绍了由单片机控制的可控硅电路,该电路运用外部中断获得同步信号,用定时器做导通角控制,并给出实用程。
The controllable silicon circuit controlled by monolithic microcomputer is introduced, which adopts external interrupt to obtain sync signals and controls conducting angel with a timer.
程洪(1990):《长江三角洲的乡村商品市场,1920- 1940,社会与经济的分析》,洛杉矶加利福尼亚大学博士论文。
Cheng, Hong 1990. The Rural Commodities Market in the Yangzi Delta, 1920-1940: a Social and Economic Analysis. Ph. D. dissertation, Univ. of California, Los Angeles.
从激光束的能量密度、瞄准光轴与激光束光轴的失调度、激光束的束散角三个方面论述某型激光照射器增程照射的可行性。
The paper discusses, on energy density of laser beam, emanative angle of laser beam and malajustment degree of laser beam′s axes, the feasibility on adding irradiation of a certain laser irradiator.
凸轮机构控制巨型液压机分配阀芯时,在不同的升程阶段对凸轮理论工作曲线压力角有不同的要求。
During different lift range phases when a CAM controls the distribution spool of a giant hydraulic press, the CAM's requirement for the pressure Angle of its theoretical working profile is different.
从理论上证明了改变导程角是控制物料旋留时间的最有效的方法。
It is proved theoretically that changing lead Angle is the best way to control the turn staying time of material.
本文通过对长三角地区煤炭供需现状,运输线路和主要影响因素的分析,预测未来三个五年长三角地区主要煤炭运输港口一程运输需求。
A forecast is made about coal transport demand in Yangtze Delta based on the analysis of the current situation of coal supply and demand, route options and main influential factors.
于是静思跟程然坐在了日落莲花茶室的一角,这里他们从前来过。
So sitting in a meditation course with the way the corner of Sunset lotus tea room, where they had come from.
本文应用零方程模型和二方程模型计算了椭球体有攻角绕流对称面上的三维湍流边界层。
Revised method is proposed for calculation of three dimensional turbulent boundary layers on the surface of symmetry plane of a flow around ellipsoid at incidence.
结构的性能由非线性时程分析所得到的结构的层间位移角来衡量。
Structural behavior is evaluated from story drift ratios obtained through nonlinear time history analyses.
舵偏角与平衡攻角匹配合理,有较高的滑翔增程能力;
Moreover, the rudder deflection angle matches reasonably with the balance angle of attack, so the ERGM has super glide ability.
文章提出了一种在经济型数控机床上实现等螺旋角圆锥螺旋线的加工方法,其原理是用等导程螺旋线去逼近此种曲线。
This paper presents a method for machining of taper cutting tools with equal helix Angle. The principle of the method is using taper helical curve with equal pitch to approach equal Angle one.
通过实验证明这种液压气门机构可通过改变泄油初始相位角实现进气门最大升程和进气迟闭角的连续可变。
Test results show that the hydraulic valve actuation system can realize continuously variable valve lift and the early intake valve closing by changing the time of oil pressure release.
同时,随着螺旋角的增大,螺旋折流板换热器的壳程压力损失呈下降趋势。
Furthermore, the pressure drop in helical baffles heat exchangers gets down with the increase of helical Angle.
结论:程晓燕在起滑时左腿摆动垂直分速过大,水平分速相对较小,重心腾起角增大;
Conclusions: At the gliding stage, Cheng Xiao-yan the swing legs vertical speed too high, level speed too smell and the enlarging angel of body gravity ;
应用五孔感头测定沿程截面内气流的切向角、轴向速度、气流静压和旋流数的分布。
A five hole probe is used for measuring the tangential Angle of flow, axial velocity, static pressure of flow and swirl number in the flow sections of the conveying system.
矩形流道断面以正方形为最优,且存在最优角圆,使单位长流道沿程水力损失最小。
The optimum passage section figure of rectangle is square, and the rectangle has 4 optimum comer circular arcs which make the hydraulic loss of friction loss of per unit length passage the least.
从理论上证明了改变导程角是控制物料旋留时间的最有效的方法。
It is proved theoretically that changing lead Angle is the best way to control the turn staying time of material. Hence the theoretical basis for production practice has...
从理论上证明了改变导程角是控制物料旋留时间的最有效的方法。
It is proved theoretically that changing lead Angle is the best way to control the turn staying time of material. Hence the theoretical basis for production practice has...
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