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词汇
olar nucleus
释义
olar nucleus
基本
例句
极核
One fuses with the egg cell to form a zygote while the other either degenerates or, in certain angiosperms, fuses with the polar nuclei to give the primary endosperm nucleus.
一个与卵细胞结合形成受精卵,另一个要么退化,要么在某些被子植物中与极核结合形成初生胚乳核。
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clover-leaf intersection
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cloverleaf junction
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cloverleafs
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cloverleaf sling
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更新时间:2026/6/26 9:50:35