查询词典 cycads

Cycads and ginkgo have motile sperm, unlike gnetophytes and conifers, which produce pollen.

苏铁和银杏具活动精子可区别于买麻藤和松柏类，它们不产生花粉。

Palms, medicinal plants, bamboos, tropical fruit collection, wild orchid garden, wild Ginger garden, the Cycads garden, seed bank, and tropical rainforest in the garden.

重点保护稀有濒危植物、特有种、旗舰种和关键种、具有较高科学价值的物种，和具有潜在经济价值如栽培作物、果树和药用植物的野生近缘种。

Cognized to vessel of cycads,help us to understand the mechanism which these most primitive seed plants extant how to adapted to harsh environments and their evolutionary level,and has significance to use efficiency measure protect these rarity plants and has significance to plant anatomy,plant systematics and plant evolution.

对苏铁类植物导管的认识，对于我们进一步了解现存最原始的种子植物对严酷环境的适应机制和进化状况，对于采取有效措施保护这些珍稀的植物类群，以及对于结构植物学、植物进化和生态学等研究方面均具有重要的意义。

Frond A term usually applied to large well-divided leaves as found in ferns, palms, and cycads.

大形叶，叶状体：该术语通常指蕨类植物、棕榈以及苏铁类所具有的大型的、分裂明显的叶。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。