正弦

AIM: To study the mechanism and implementation of current pulse exciting impedance measurement of bio tissues.

为减少皮肤电极接触阻抗、极化电势所引起的伪差，实际应用中多采用正弦波恒流源激励［2］。

The inclination of the ecliptic results in the contribution of another sine wave variation with an amplitude of 9.87 minutes and a period of a half year to the equation of time.

黄道倾角的结果导致另一个半年为周期的正弦波变动效应，使均时差在半年的震荡达到9.87分钟。

Height Positioning Method Based on Double Sinusoidal Bar Code.

图像式双正弦条码高程定位方法研究

With sine pulse output,the instrument has a wider range of therapy through choosing the use of continuous waves and pulse wave.

本机具有正弦、脉冲输出，有选择地使用连续波和脉冲波扩大了治疗的范围。

By comparing the spectra obtained from two different slow-wave structures, we get the conclusion that Doppler shift of an atom in slow-wave field varies with sin of the pitch angle of the helix structures.

通过比较两种不同几何尺寸的慢波结构产生的场与原子束作用得到的微波谱，得出了在螺线管结构的慢波场中，原子的多普勒频移随螺距角的正弦减小而增大的结论。

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。