velamen
n.
膜，帆，根被；
变形
复数：velamina
英英释义
Velamen
Velamen is a spongy, multiple epidermis that covers the roots of some epiphytic or semi-epiphytic plants, such as orchid and Clivia species.
以上来源于:Wikipedia
权威例句
Velamenvelamen
Velamen
Velamentous insertion of the cord in the first trimester
Velamentous insertion of the cord in the first trimester
Velamen radicum micromorphology and classification of Orchidaceae
Velamentous cord insertion in monochorionic twin gestation. An added risk factor
The role of velamentous cord insertion in the etiology of twin-twin transfusion syndrome
SHOOTLESSNESS, VELAMENTOUS ROOTS, AND THE PRE‐EMINENCE OF ORCHIDACEAE IN THE EPIPHYTIC BIOTOPE
Perinatal diagnostic evaluation of velamentous umbilical cord insertion: Clinical, doppler, and ultrasonic findings
1. Objective To discuss the application of small incision used in uterectomy under velamen.
目的：探讨小切口筋膜内子宫切除术在临床中的应用价值。
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2. Objective To study Non-PVC officinal compounding velamen and glass bottle with transfuse of compatibility.
目的研究非PVC 多层共挤膜输液袋及玻璃瓶与大容量注射剂的相容性。
danci.911cha.com
3. In the older parts of the roots, a modified spongy epidermis called velamen has the function to absorb humidity.
在比较根系比较老旧的部分，一种变性的海绵状表皮称为根被有吸收潮气的功能。
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4. The contact resistance between contacts is composed of contraction resistance and velamen resistance.
电器触点间的接触电阻包括收缩电阻和薄膜电阻。
dict.cnki.net
5. The traditional measuring method is that passing a large current through contacts so that velamen resistance is eliminated, then contact resistance is nothing but contraction resistance.
传统的检测方法是让触点接通一个较大的电流，以消除薄膜电阻，此时触点的接触电阻即为收缩电阻。
dict.cnki.net
6. In some orchids the velamen includes spongy and fibrous bodies near the passage cells.
在一些兰科植物里面，根被在通道细胞附近包含有海绵状的和纤维状的物体。
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7. Some time ago, the Zheng prosperous velamen evaluated first session Zhejiang Province "ten big charitable stars".
不久前，郑昌根被评为首届浙江省“十大慈善之星”。
wdwb.92doc.com
8. Some time ago, the Zheng prosperous velamen evaluated first session Zhejiang Province "ten big charitable stars".
不久前，郑昌根被评为首届浙江省“十大慈善之星”。
wdwb.92doc.com
9. The roots of many orchids and other epiphytes developed a sheath of dead cells, the velamen, which helps to absorb water from the atmosphere.
许多兰科植物的根和一些附生植物的死细胞鞘以及根被都可以帮助植物从空气中吸收水分。
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velamen
