基本释义:

外珠孔

网络释义

1)exostome

['eks?,st?um],外珠孔

2)Micropyle,珠孔

3)micropyle,珠孔;卵膜孔

4)porous silica-bead,多孔硅珠

5)obturator,珠孔塞

6)drilled through pearl,穿孔珍珠

用法和例句

The obturator of Allium cepa L.

）珠孔塞由珠柄表皮细胞径向伸长特化而来，外观呈扇形规则地排列于珠孔之外。

(of a plant ovule) completely straight with the micropyle at the apex.

（指植物的胚珠）珠孔完全直向顶点。

The region of an ovule that is opposite the micropyle, where the integuments and nucellus are joined.

合点珠孔对面的胚珠内结合珠被和珠心的一个区域

(of a plant ovule) curved with the micropyle near the base almost touching its stalk.

（指植物的胚珠）珠孔弯曲接近底部，几乎接触了干。

A minute opening in the ovule of a seed plant through which the pollen tube usually enters.

珠孔种子植物胚珠上的小开口，通常花粉管由此进入胚珠

Growing straight, so that the micropyle is at the end opposite the stalk. Used of an ovule.

直生的直立生长以至珠孔在茎的另一端的。用于形容胚珠

Performance comparison between glazed hollow bead and closed-cell expanded perlite

玻化微珠与闭孔膨胀珍珠岩的性能比较

The Study of Preparation and Adsorption of Controllabale Apertues Glass Microsphere;

可控孔径多孔玻璃微珠的研制及其吸附性能的研究

Having an ovule partially inverted and curved such that the micropyle nearly meets the funiculus.

弯生胚珠的具有部分地反向生长并变弯曲以致卵孔几乎碰到珠柄的胚珠的

eyes, faces, bodies, etc glistening with tears, sweat, oil

晶莹的泪眼、 汗珠闪闪的面孔、 油光发亮的身体.

Having eyes with greatly distended pupils.

眼珠暴突的具有带有膨大的瞳孔的眼睛的

Design and Construction of Non-electric Relay Network in Deep-hole Controlled Blasting at Zhubaoshan

珠包山深孔控制爆破起爆网路设计与施工

THE PERIOD OF THE KILLING OFF OF HTE ELEPHANT CROCODILE AND PEACOCK IN THE ADJACENT REGIONS OF THE PEART RIVER DELTA

试论珠江三角洲地区象、鳄、孔雀灭绝时期

The Preparation of Microporous Polyethylene Using Hollow Glass Beads as Gas Carriers;

以空心玻璃微珠为气体载体制备微孔聚乙烯

THE STUDY FOR MAKING AND ADSORPTION OF POROUS GLASS MICROSPHERE;

多孔玻璃微珠的研制及其吸附性能研究

Design of Production Line of Spherical and Closed-porous Expanded Pearlite with 7200t of Annual Capacity;

年产7200t球形闭孔膨胀珍珠岩生产线设计

Perfect Union of Pearl and Jade All Roads Lead to Rome-On Confucius s and Rousseau s Educational Ideas;

珠联璧合 殊途同归——浅谈孔子、卢梭的教育观

Studies on Controlled Porosity Osmotic Pump Tablets of Extract of Lysimachia Clethroide Duby

珍珠菜提取物微孔渗透泵控释片的研究

Studies on the purification process of leaves of Rhizoma Panacis Majoris′total saponins by macroporous absorbent resin

大孔吸附树脂对珠子参叶总皂苷纯化工艺研究