查询词典 growth cone

These growth units were absorbed and join the crystal lattice on the growth interface through collision and aggregation.The powders with better crystallinity and double cone or tetrahedron shape were obtained after amorphous ZnS was treated by solventthermal method.

采用溶剂热处理高浓度条件下制备的ZnS无定形粉末，得到晶态结构完整，形状为双锥状或四面体状的粉末。

The results show that the particles character as the growth of anion coordination tetrahedron during solvent thermal treatment, where blende-type ZnS particle is in the shape of double cone or tetrahedron, blend-type CdS appears as the tetrahedron, but wurtzite-type CdS is in the shape of cone. In addition, the particles with the better crystallinity are obtained with the increase of solvent thermal treatment temperature and time.

结果表明：采用溶剂热处理，粉末形状呈现负离子配位多面体生长特征，闪锌矿型ZnS粉末由球形变为双锥状或四面体状，颗粒上有明显的电子衍射花纹；闪锌矿型CdS晶体粉末主要呈四面体形状，而纤锌矿型CdS晶体粉末则以锥状为主，并且粉末的晶型随溶剂热处理温度的升高和时间的延长更趋于完整。

Presented polymorphism, from south-east, mid-part to north-west of Yunnan plateau, or with the latitude or altitude increasing, the general trend of the morphological variance was the tendency of miniaturization: the length of needles, size of the buds, frequency of the 3 needles per bundle, needle number per bundle, size of the female cone and its scute, the width of the wood growth ring and the needle area of transverse section decreasing.

论文作者王昌命导师姜汉侨教授学科专业生态学研究领域\研究方向植物生态学学位级别博士学位授予单位云南大学学位授予日期2002 论文页码总数106页关键词松树云南松馆藏号BSLW /2003 /S791 /5 本研究遵循生态学的原理和方法，对分布在滇东南、滇中以及滇西北地区的10个云南松种群就树皮、木材、针叶、球果等10多个形态性状进行了系统地观察统计分析。

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。