子实层体 hymenophore
循环子物体各层级 Sub-object Level Cycle
正电子体层成像 positive electron tomography ; positron emission tomography
离子导体层 Iron Conducting Layer
单光子发射体层成像 single photon emission computed tomography
四层-原子晶体 Covalent Crystal Model
正电子发射体层摄影 position emission tomography ; PET ; positron emission CT
正电子发射体层成像 positron emission tomography ; PET ; positron emission computed tomography ; postron emmition tomography
应用支持子层数据实体 APSDE
为了降低水泥膨胀所引起的膨胀应力，延长瓷绝缘子的使用寿命，在胶装时一般在瓷体和水泥之间涂一层沥青缓冲层。
In order to reduce the expansion stress resulting from cement's expansion and prolong the life-span of porcelain insulator, a thin asphalt buffer layer is coated between the porcelain and the cement.
大胞子四分体线形排列，合点端大孢子为功能大孢子，胚囊发育类型为蓼型，具有特化的珠被绒毡层和承珠盘。
Megaspore tetrad is linear. the chalazal megaspore develops into an embryo sac of polygonum type. Hypostase and special integument tapetum exist in the ovule.
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