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cycads 英siː'kædz美siː'kædz COCA¹¹⁴¹³⁴BNC⁷⁹⁰⁷⁶⁺¹¹
基本英英例句例句
苏铁¹⁰⁰原型cycad的复数
名词 cycad:
any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leavesGenus of small evergreen tropical and subtropocal Americancycads.一种小的常绿热带和亚热带美洲苏铁。
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。 Any of various chiefly tropical American cycads of the genus Zamia, having a thick, usually underground trunk, palm like terminal leaves, and seeds borne in woody cones.
泽米一种主要生长在美洲热带地区的泽米属苏铁科植物，其树干很粗，通常长在地下，生有掌状顶生叶子，而且种子生于木本球果中。 hotdic
The free nuclear stage in its earlier embryo development is basically the same as that of Cycads and Ginkgo.
胚胎发育初期游离核阶段与裸子植物苏铁、银杏基本相同； cnki
There are11 genus with about200 species of cycads in the world, and the chemical constituents and pharmacology of many species have been reported.
苏铁植物分11属共200余种，其中许多种的化学成分和药理作用已陆续有报道。 kns50.chkd.cnki.net
The plants called cycads remain rock hard. Forests arose and nurtured things with wings.
而苏铁依然顽强地存活到今天，森林产生并孕育出生有双翼的动物。 video.2u4u.com.cn
They expected to find evidence of well-known Late Cretaceous vegetation such as conifers and cycads.
他们原本期望发现晚白垩世时期著名植物如针叶树和苏铁存在的证据。 iciba
This paper reports reproductive organ fossils of cycads collected by the author in China.
本文对苏铁类化石的系统分类作了概要的介绍。 cnki
This finding is contrary to the conclusion that Cycads belong to taproot system for a long time, and is a new discovery in Cycads research.
这一研究成果打破了长期以来认为苏铁类植物为直根系植物的结论，是苏铁类植物研究的一个新的、重大的发现。 cnki |