For what reason can the characteristic curve be drawn from a cosine curve?

Cosine curve is a simple model indicating the periodic phenomenon.

余弦曲线是周期现象的简单模型。

The concept of extra cosecant square antenna is described in this paper. The analysis and computational formulas of doubly curved reflector antenna with shaped beam are conducted in all details. The computing software diagram, designing method, the computational and practical results are also given.

介绍了超余割平方天线的概念，详细推导了双弯曲反射面赋形波束天线的分析、计算公式、计算软件框图、设计方法以及针对某一天线方向图的计算和实测结果。

The inspection method of cosecant beam antenna is discussed in depth in this paper.

对余割波束天线的检测方法进行了较深入的探讨。

The research on inspection method of cosecant beam antenna

余割波束天线检测方法的研究

Development of ELISA for Detecting Antibody to Chicken Infectious Coryza

间接ELISA检测鸡传染性鼻炎抗体的研究

Development of Blocking ELISA Kit to the Diagnosis of Infectious Coryza

鸡传染性鼻炎单抗阻断ELISA诊断试剂盒的研究

This applies to most respiratory infections ( e.g, mycoplasma infections, infectious coryza, laryngotracheitis).

大多数呼吸道感染都如此，如支原体感染，传染性鼻炎，喉气管炎。

This genus' evolutionary direction: the number of winter bud scale is from many to two, inflorescence: compound raceme → compound corymb → corymb → umbel.

本属的进化趋势为冬芽芽鳞由数枚减少到2枚，花序由总状圆锥花序→复伞房花序→伞房花序→伞形花序。

Studies on the extraction technology of corydalis alkaloid from corydalis tuber

延胡索有效部位提取工艺研究

HPLC Determination of Quaternary Alkaloid from Herba Corydalis Tuber

HPLC法测定延胡索药材中季胺型生物碱的含量

Conclusion: The method is reliable, sensitive and accurate for improve the certification of herba corydalis tuber.

结论：本方法重现性好，灵敏度高，结果准确可靠。

Effects of different compatibility of Corydalis tuber on analgesic effect and its circadian rhythm in mice

延胡索不同配伍对小鼠痛阈昼夜节律影响的实验研究

Fevervine, short-pedicel aconite root, wild aconite root, and corydalis tuber have very good analgesic function which has a dependent relationship with its dosage.

鸡屎藤、雪上一枝蒿、草乌、延胡索均有较好的镇痛作用，且与剂量呈依赖关系。

Result: Corydalis Tuber 、 Pubescent Angelica can be examined out by TLC chromatogram.

结果：在TLC色谱中均能检出延胡索、独活。

The paper analyses the influence of the final process, i.e. grinding, of harder materials on the roughness of surface, including the roughness of surface processed by artificial diamond grinding wheel and artificial corundum grinding wheel and comparison of parameters of support curves.

分析了较硬材料的最终加工工序磨削对其表面粗糙度的影响，包括人造金刚石砂轮与人造刚玉砂轮所加工的表面粗糙度和支承曲线参数值的对比。

The Study of Defects in the Artificial Corundum Crystals

人工刚玉晶体的缺陷研究

Technology for Manufacturing Fused Zircon Corundum Refractories

电熔锆刚玉砖的生产技术

Production and Application of Environmental Powder Coating Synthesis of molochite using fly ash from fused brown corundum

环保型刚玉高光干粉涂料生产与应用电熔棕刚玉除尘粉合成莫来卡特的研究

Synthesis of molochite using fly ash from fused brown corundum

电熔棕刚玉除尘粉合成莫来卡特的研究

Study on corrosion features of fused zirconia corundum block of glass tank furnace

玻璃池窑电熔锆刚玉砖侵蚀特征的研究