孢子异型

A prefix is often added, providing information as to the nature of the spore, for example conidiospores arise on a conidium, megaspores and microspores are the larger and smaller spores produced by heterosporous plants, etc.

此词前常有前缀修饰，用以提供含孢子特征的信息。例如 conidiospores 源于分生孢子， megaspores 和 microspores 是大孢子和小孢子，由具异型孢子体的植物体产生。

Heterospory The production of two different sizes of spore: microspores and megaspores.

孢子异型：指植物产生两种大小不同的孢子：小孢子和大孢子。

In theterosporous species, a distinction is usually made between megaspore mother cells and microspore mother cells.

在异型孢子体种类中，可区分为大孢子母细胞和小孢子母细胞。

In seed plants also produce spores, and spores are profiled in the ovule Pearl hearts a megaspore mother cell produces large spores by meiosis in the anthers of the microspore mother cells produced by meiosis of microspore.

在种子植物中也产生孢子，且均为孢子异型，在胚珠的珠心中的1个大孢子母细胞经减数分裂产生大孢子，在花药中的小孢子母细胞经减数分裂产生小孢子。

This is kinds of spores are of various sizes known as the spores profiled, such as Selaginella, Azolla and so on.

这种孢子有大小之分的情况称为孢子异型，如卷柏属、满江红等。

Quillworts are heterosporous, mainly aquatic perennials, with a dense rosette of tubular quill-like leaves arising from a short, stout rootstock.

水韭目的植物具有异型孢子，是多年水生植物。其管状条形叶密集簇生于粗短的根茎之上。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。