pinna

Anatomical studies on pinna and rachis of Dioon holmgrenii and Macrozamia moorei;

贺氏双子铁与摩瑞大泽米羽片和叶轴的解剖学研究

Roots,petioles and pinnas of Cycas panzhihuaensis were dissociated by the nitric acid-chrome acid solution and observed in optical microscope.

攀枝花苏铁的根、叶柄、羽片的木质部用乔菲氏液进行解离,在光学显微镜下观察,发现了形态各异的导管:有环纹导管、螺纹导管、梯纹导管、网纹导管和孔纹导管。

The structure of roots, stems, rachises and pinnaes in several species of cycads was studied by microscopy method for anatomy research.

本研究主要采用解剖制片技术和显微技术的方法对部分苏铁类植物的根、茎、叶轴和羽片进行解剖学研究,研究结果表明: 不同种类其羽片横切面结构不同,摩瑞大泽米铁:上下表皮均有气孔的分布,栅栏组织发达,近轴面和远轴面均有栅栏组织,具平行叶脉、维管束和黏液道相间排列在同一条平周线上。

In order to figure out the difference between the silky and contour feather development, we applied the candidate gene clone strategy to hunt for the gene controlling the feather shape.

为了揭示丝羽和片羽羽毛结构差异形成的秘密,寻找控制羽形性状的基因;在对鸡羽形性状遗传连锁定位的基础上,本研究选择鸡3号染色体上BMP5、cEphA7、Tbx18基因作为候选基因,通过分析候选基因多态性与羽形性状的相关性及其在鸡羽毛不同发育阶段的表达情况,来研究候选基因与羽形性状的相关性。

The growth and development of frond and pinna in five species of cycads was studied by growth observation and microscopy of tissue development.

本研究主要采用生长观测以及显微技术的方法对5种苏铁羽叶和羽片的生长发育过程中的形态变化、生长速度、羽片组织的分化、表皮和气孔器的发育以及气孔密度作了详细的观察和研究，旨在为苏铁的分类、保护、化石的鉴定、以及探讨苏铁类植物的演化提供一些新的证据，同时为苏铁的栽培提供一定的理论指导。

Any of the ultimate leaflets of a bipinnately compound leaf.

小羽片，二回羽片二回羽片结构的一种根本小叶

A leaflet or primary division of a pinnately compound leaf.

（复叶的）羽片羽状复叶的小叶子或羽片部分

any fern of the genus Doodia having pinnate fronds with sharply dentate pinnae.

带有羊齿羽片披针形复叶的蕨类。

Otherwise, you can strip it by carefully grabbing the web of the feather near the tip and pulling it away from the quill.

或者，你可以小心地抓住靠近羽毛头部的羽片部分，并将其从羽茎上撕下来。

bipinnatifid with segments pinnatifid.

二回羽状分裂的羽状半裂片。

palm having pinnate or featherlike leaves.

有羽状的或像羽毛一样的叶片的棕。

One feather overlaps another on a bird's wing.

鸟翅膀上的羽毛一片压着另一片。

pinnatifid with the segments also pinnatifid.

有羽状分裂的细裂片组成的羽状分裂结构。

Having a pinnately divided leaf with an enlarged terminal lobe and smaller lateral lobes.

大头羽裂的具有一扩大的末端裂片和较小侧裂片的羽状分叶

all gussied up in sequins and feathers.

全都装饰上了金属片和羽毛。

a feather or cluster of feathers worn as an ornament.

作为装饰品佩戴的一片或一串羽毛。

A red feather was floating about on the still lake.

一片红色的羽毛在静静的湖面上漂浮。

A small joint in the middle of a bird's wing, homologous with the thumb and bearing three or four quill - like feathers.

小翼羽鸟翅中部的小骨节，与大拇指同源，上有三四片羽毛

Even a feather will turn a delicate scale.

一台精密的天平能称出即使是一片羽毛的重量

Development and Properties Study on the Thermal Insulation Interlining of Feather and Synthetic Fiber;

羽毛/化纤混合保暖絮片的开发及其性能的研究

Chromatographic and Spectral Characteristics and Stability of Pigments from Brassica oleracea var. acephala D.C. Leaves

羽衣甘蓝叶片色素的基本特性及其稳定性研究

Divided into pinnae that are subdivided into smaller, further subdivided leaflets or lobes, as in many ferns.

三回羽状的二回羽状的又分割成更小的一回羽状的，进一步分割成小叶或裂片，如各种蕨类的叶片

Only highly evolved feather shapes- namely, the asymmetrical feather with a closed vane, which did not occur until stage5- could have been used for flight.

事实上，只有高度演化的羽毛，即形状不对称、片闭合、阶段5衍生而来的羽毛，才能用来飞翔。