卵器

During early embryogeny, four tiers of cells are produced near the lower end of the archegonium.

在早的胚形成期间，细胞的四列在造卵器的下端的附近被生产。

Botany of or relating to an archegonium.

属于或与植物藏卵器有关。

A minute rudimentary plant contained within a seed or an archegonium.

包含在种子或藏卵器中的一种微小的未生长的植物。

There are commonly eight nuclei in the embryo sac: the egg apparatus at the micropylar end, made up of an gee nucleus and two synergid nuclei; three antipodal cells at the oppsite chalazal end that probably aid embryo nourishment; and two polar nuclei in the center that fuse to form the primary endosperm nucleus.

通常胚囊中有8个核，卵器在珠孔端，由卵和两个助细胞组成；3个反足细胞在合点端，可能为胚胎提供营养；胚囊中央有2个极核，融合在一起形成最初的胚乳核。

Objective To study the application techniques of two monitoring methods for Aedes albopictus in the filed.

目的 通过现场比较实验，进一步研究诱卵杯、诱蚊诱卵器在现场的使用技术，为推广现场应用和评价提供技术依据。

In the"poly-egg apparatus embryo sac",three egg-apparatuses are the majority which canbe further divided into three subtypes,namely,"5-2-1"type,"6-2-0"type and"5-3-0"type,based on the position of antipodal cell.

三卵卵器结构胚囊&依反足细胞的位置又可分出&5-2-1&型、&6-2-0&型和&5-3-0&型等三种亚类型。&

The sex organs appear about 5 weeks after sowing. The antheridia consist of 3 cells. The archegonial neck usually consists of 4 rows and 4 columns of cells at maturity.

播种5周左右开始有性器官出现，精子器由3细胞组成，成熟颈卵器颈部由4列细胞组成， 4层细胞高。

A sheathlike outgrowth of tissue in bryophytes protecting the archegonia or antheridia in certain liverworts.

总苞：1 是一种由被子植物花序下方的环状苞叶组成的保护结构。2 是苔藓植物外方具有的鞘状结构，在某些苔类中用来保护颈卵器或精子器。

In organisms showing sexuality, the gametes are of two types: male and female. They may be produced in special organs (e.g. carpel and anther in angiosperms, archegonia and antheridia in lower plants and some algae). The gametes may be derived from the same parent AUTOGAMY0 or from two different parents

在显示性别差异的器官中，配子体分两种：雄配子与雌配子，二者可能在特殊器官中产生（例如：被子植物的心皮或其它结构、低等植物及某些藻类的颈卵器和精子器）配子可以来自同一亲本或由两个不同亲本分别产生。

Moreover, the extremely slow development of gametophyte and time interval between the appearance of antheridia and archegonia resulting from the inherent physiochemical property of red soil make it impossible to fertilize and generate sporophyte.

此外，红壤固有的理化性质导致扇蕨配子体发育极其缓慢、精子器和颈卵器发生的时间间隔过长使其不能受精产生于包子体。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。