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chalaza

n. [植] 合点；卵带；[细胞] 卵黄系带

1、[植]合点

达到子房内的胚珠时，从珠孔或合点（Chalaza）进入胚珠内。花粉管的伸长速度随植物种类或因外界条件而不同。

2、系带

系带chalaza温差电致冷原理及赝三元半导体致冷材料的性能THERMOELECTRIC REFRIGERATION AND PERFORMANCE OF PSEUDOTERNARY THERMOELECTRIC M...

3、[昆]毛突

...合蕊冠：gynostegium合点;卵带;毛突：chalaza合成药物：synthetic drugs ...

4、卵带

...合蕊冠：gynostegium合点;卵带;毛突：chalaza合成药物：synthetic drugs ...

chalaza secondary sac合点次生囊

生物学

basal part of a plant ovule opposite the micropyle; where integument and nucellus are joined

one of two spiral bands of tissue connecting the egg yolk to the enclosing membrane at either end of the shell

1.
N（名词） one of a pair of spiral threads of albumen holding the yolk of a bird's egg in position 卵黄系带

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