In this paper the floral ontogeny and the ovary development of rivina humilis l . were observed . the results showed that ( 1 ) the tepal primordia initiated in 2 / 5 spirals . the abaxial one initiated first , then the adaxial one , finally the lateral two initiated nearly simultaneously . the third one initiated on the position near the first tepal , and there is a gap between itself and the second tepal . ( 2 ) the 4 stamineal primordia initiated in one whorl at the same time . ( 3 ) the carpellary primordium initiated from the abaxial side of flower primordium ; the carpellary primordium grew upwards and towards axis after it was formed , therefore an elliptic orifice was formed at the adaxial position of ovary , which was the remainder of the mouth of ovary before the ovary was fused completely . with the ovary maturing , the orifice was narrowed because of the ovary growth , at last fused completely . the gynoecium is composed of a single carpel . ( 4 ) in the series developmental sections of ovary , the ovular primordium was initiated on the adaxial meristem when the mouth of ovary was formed 对数珠珊瑚的花器官发生和子房的发育过程进行了观察.结果表明: ( 1 )数珠珊瑚花被呈2 / 5螺旋状发生,远轴侧的1枚先发生,其次为近轴侧的1枚发生,最后侧方的2枚花被几乎同时发生,第3枚花被在靠近第1枚的位置发生,第2枚和第3枚之间有1个空隙; ( 2 ) 4枚雄蕊是同时发生的; ( 3 )心皮发生于分生组织的远轴侧,心皮原基形成后,向上向轴生长,在子房成熟前在近轴侧非正中位形成1个孔,该孔为心皮最终愈合前的残迹,到子房成熟时,因子房的生长孔被挤压缩小,在进一步的生长过程中愈合.子房由1枚心皮构成; ( 4 )从子房发育过程的切片看,该植物的胚珠是在子房发生后不久发生的,子房上的圆孔形成时,从近轴侧的分生组织发生胚珠原基,由胚珠原基分化出珠被与珠心
The patterns are used to make correct and repid classification and recognition of 340 simulated spilled oil samples of diesel fuel , gasoline and lube oil with their volumetric fraction of seawater greater than 4 : 10000 , which provides scientific basis for using near - infrared spectrometry to discriminate the real spilled oil samples 采用比模型对柴油、汽油和润滑油等334个与海水体积分数4 : 10000的模拟溢油样品进行了准确快速的分类和识别，为近红外光谱技术判别实际溢油样品提供了科学依据。
Now the diffuse earthquake has been used in the earthquake hazard analysis for the nuclear power plant . so we collect some records from the small - moderate earthquakes with magnitude between 4 . 0 - 6 . 5 and distance from the source less than 70 km . then we develop the attenuation laws of these earthquakes expecting to reflect the attenuation laws of the diffuse earthquakes 通常为近源中小地震的弥散地震影响是核工程安全性评价中的重要内容，为满足核工程地震安全性评价工作的需要，本文选取了一些震级介于4 . 0 ? 6 . 5之间，距离小于70km的中小地震的近场记录，对这些地震的衰减规律进行了研究。
