查询词典 palm fern

Any of various fern s of the widely distributed genus Polypodium,having simple or compound fronds,round sori arranged in one or more rows along the midrib,and creeping rootstocks.

水龙骨属植物一种分布广泛的水龙骨属植物，有简单的或复合的厥叶，沿中脑以一行或多行排列的圆形囊群，和爬行的根状茎

Slender fern of northern North America with shining chestnut-colored stipes and bipinnate fronds with usually distinct marginal sori.

具有亮褐色叶柄和二回羽状复叶并通常带有边缘孢子群的一种北美洲北方的细长蕨类。

Beautiful spreading fern of eastern North America and eastern Asia naturalized in western Europe; pinnately divided fronds show a slight tendency to fold when touched; pinnules enclose groups of sori in beadlike lobes.

北美东部和亚洲西部一种广泛分布的美丽的蕨类，并移植欧洲西部；当受到外界刺激时羽状半裂复叶略微合拢；二回羽叶包裹珠形叶片的孢子囊群。

An enclosing membrane, as that covering the sorus of a fern.

囊群盖一种包裹其它物的膜，如蕨类植物的孢囊群的覆盖膜

A closed, spherical ascocarp.An enclosing membrane, as that covering the sorus of a fern.

囊群盖一种包裹其它物的膜，如蕨类植物的孢囊群的覆盖膜

This paper gives an overview of the different and conserved features of fern spores and spermatophyte pollen germination.

本文综述了蕨类植物孢子和种子植物花粉萌发过程的差异和保守性特征。

Fern spores and spermatophyte pollen have major roles in plant sex reproduction.

蕨类植物孢子与种子植物花粉在有性生殖过程中都具有重要的作用。

Her spiderweb tells of her feelings for a little pig named Wilbur, as well as the feeling of a little girl named Fern...who loves Wilbur, too.

这个叫夏洛特的蜘蛛说出了她对一头叫威尔伯的小猪的感觉，也说出了那个叫芬的小女孩对威尔伯的感觉--她也爱威尔伯。

A support for a fern sporangium or moss capsule.A rolling stone gathers no moss .

滚动的石头不生青苔(经常漂泊不定的人难有钱财或成就)。

A plant, such as a tropical orchid or a staghorn fern, that grows on another plant upon which it depends for mechanical support but not for nutrients.

附生植物一种生长于另一植物之上的植物，如热带兰或石松，依靠另一植物支持生长而不以其获得养料

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。