螺旋板

On the theory of real-time CGH, using LCD, spherical and helical wavefronts are produced real-time, and compared with wavefront whose CGH is recorded by film. An aspheric is tested with real-time CGH.

运用实时计算全息技术，采用液晶板，实时产生了球面、螺旋面波前，经与胶片记录的计算全息图对应比较，其结果良好；并进行了实时计算全息测量非球面的实验。

Effect of different tubes on the heat transfer and flow resistance performance of oil cooler with coronal fin tube s supported by helical baffles was studied in this paper.

通过实验研究了不同结构参数的螺旋折流板冠形翅片管油冷器，获得了油冷器的传热与阻力性能曲线。

After centreless grinding machine parts were achieved, grinding wheel dresser, rings pallet and screw guide wheel all accord with the need of grinding tapered roller convexity.

对无心磨床的附件进行必要的改进，使其砂轮修整器、工件托板和螺旋导轮均符合磨削圆锥滚子素线凸度的需要。

Ripe design theory and practical experience of many years and the imported technology has been used for our production. We have the series product of En Masse Conveyor, Bucket Elevator, Screw Conveyor, Chain Conveyor, Bucket-chain Conveyor, Crusher and Electrical Control Box.

自公司成立以来，公司应用已掌握的成熟的设计理论和多年积累的实践经验，并吸收国外的先进技术，成功开发出埋刮板输送机、斗式提升机、螺旋输送机、链运机、链斗机、破碎机、电气控制柜等系列产品。

The two strands of the double helix are linked by pairs of nucleic acids like the treads in a spiral staircase.

这个双螺旋结构的两股之间是由成对的核酸联结的，它们就像螺旋式楼梯中的踏步板。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。