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1.Raw data were acquired by multislice spiral CT-Aquilion(Toshiba),scan speed 0.32s/270°,raw slice thickness 2.0mm,helical pitch 1.0-1.2.Contrast media(Ioverol) was injected intravenously(2ml/kg) at speed of 3.5ml/s,delay time was 20s.
东芝AQUILION多层螺旋CT采集原始数据 ,扫描速度0.32s/270° ,层厚2mm,螺距1.0 -1.2。 对比剂安射力 :2ml/kg,注射速率3.5ml/s。收藏指正
2.The meshing theory of helical gear is applied to analyze the influence of gear base pitch viaration to gear transmission process, and the mathematical model of error and aberrance in the transitional process of crossed helical gear transmission was preseinted.
应用交错轴斜齿轮啮合理论 ,分析了齿轮基节偏差对齿轮传动过程的影响 ; 给出了交错轴斜齿轮啮合传动过渡过程的误差与变异数学模型 ,完善了齿轮整体误差测量理论。收藏指正
3.A maxi- mum peak power of 660mW at 260.0nm was obtained with a helical hol- low cathode of 1.2m length, 6mm inner diameter and 9mm coil pitch.
在放电长度1.2m,内径6mm,螺距9mm的分段放电管中,在波长260nm时获得最大峰值功率660mW。收藏指正
4.Command of the Development of the Variable Pitch Helical Blade for AutoCAD by Using Secondary Expansion of AutoCAD
AutoCAD扩充绘制变螺距螺旋面展开图命令收藏指正
5.This tester is suitable to measure accuracies of pitch deviation with inside and outside straight helical circular gear among seventh degree. Easy to operate and maintenance.
适用于检查7级或低于7级精度的内外齿合直齿与斜齿圆柱齿轮的周节偏差。操作简便，易于维修，可供各工厂计量室及车间使用。收藏指正
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