Testa The hard dry protective covering of a seed, formed from the integuments of the ovule.

  • 外种皮:覆盖在种子外部的坚硬干燥的保护层, 由胚珠的珠被发育形成.
  • 来源:网络期刊摘选更新时间:2020-10-30 18:38:43

  • 相关例句
1、

Ovarian 2 rooms, ovule much line, style filiform, post tongue shape is compressed.

子房2室, 胚珠多列, 花柱丝状, 柱头舌状扁平.

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2、

The occurrence of more than one embryo in the ovule denotes polyembryony.

在胚珠中有一个以上的胚发生是表示多胚现象.

——辞典例句

3、

The fertilized ovule becomes the seed, and the ovary becomes the fruit.

已受精的卵子成为种子, 而子房变成了果实.

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4、

Ovarian half, ovule majority, the seed has a wing.

子房半下位, 胚珠多数, 种子有翅.

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5、

The spherical embryonic mass of blastomeres formed before and resulting from cleavage of the fertilized ovum.

桑椹胚形成于''.'囊'.''胚之前且处于胚胎''.'期'. ''内的球形裂球群,由受精卵细胞的分裂而成.

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6、

One pc of germ cell approaches to a ovum quietly at first.

一个精子一马当先悄悄接近卵子.

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7、

By day 11 the ovum begins to attach and implant in the lining of the uterus.

到第11天卵子着床嵌入子宫内壁.

——辞典例句

8、

One way is taking the cell from a fertilized ovum.

一种方法是从受精卵中取出细胞.

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9、

Field distribution pattern of the first generation of rice stem fly ovum was preliminarily studied.

对稻秆蝇一代卵在田间的分布型进行了初步研究.

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10、

In vitro, the acrosome reaction of sperm does not influence the ovum fertilization rate.

在体外, 精子顶体反应率的高低与卵子受精率没有明显的相关性.

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11、

Then you put that ovum into a different female's stomach.

然后,将那个卵细胞放到一个不同的雌性腹中.

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12、

The ovum develops only in the female, and the sperm cell develops only in the male.

卵细胞仅在女性体内产生, 而精子细胞则仅在男性体内制造.

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13、

Several suitable target antigens from Spermatozoa, ovum and reproductive hormones have been used for the vaccine.

人们从精子 、 卵细胞和生殖激素中筛选出最为适合的靶抗原用于免疫避孕疫苗.

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14、

How does a zygote differ from an ovum?

受精卵和卵细胞有何不同?

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15、

Once the ovum is released it has a lifespan of 12 to 36 hours.

卵子排出后可存活12至36小时。

柯林斯词典例句库

16、

The ovum passes into the fallopianuterinetube , and will degenerate if not fertilized within about 24 hours.

如果卵子排出后约24小时内未能受精就将退化.

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17、

Objective Psychological nursing can be control effectively of up anxious level before and after ovum.

目的取卵术手术前后实施心理护理以有效控制患者焦虑水平的上升.

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18、

The formation, development, and maturation of an ovum.

形成卵并产出卵;这是雌性动物的生理活动.

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19、

Additional, ovarian return bear to wear every months eduction the responsibility of an ovum.

另外, 卵巢还肩负着每月排出一个卵子的责任.

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