单词placentation
n.: 【动,解】胎盘形成；【植】胎座式
网络: 胎座型；胎盘生成；胚珠在子房
【植物;植物学】胎座式
【解剖学;动物学】胎盘形成
The trophoblast adhesion to the uterine wall is the requisite first step of implantation and, subsequently, placentation.
紧贴在子宫壁的滋养层是胚胎着床必不可少的步骤，随后形成胎盘。
ovules numerous; placentation axile. Styles 2. Capsule ovoid, globose, or ellipsoid, dehiscing longitudinally or irregularly; pericarp thin.
胚珠多数中轴胎座花柱2蒴果卵球形，球状，不规则的或椭圆形，纵向开裂或；
Ovary superior or inferior, placentation axile, rarely parietal, often many ovules per locule.
子房上位或者下位，中轴胎座，很少周壁胎座，通常每子房室很多胚珠。
The carpel closed toward and connected with the ovary central column to form axile placentation since mid October.
十月中旬起心皮向内合生并与中轴连合形成中轴胎座。
placentation axile, sometimes free central at fruit maturity.
中轴胎座，有时在成熟果的中心离生。
Anthers shorter than 4 mm, longitudinally dehiscent; ovules with parietal placentation near base of ovary.
花药短于4毫米，纵向开裂；子房的胚珠具侧膜胎座近基部。
ovules numerous, with free central placentation, longitudinal 5-fascicled.
胚珠许多，具特立中央胎座式，纵裂5。
anthers dorsifixed. Ovary placentation axile.
花药背着子房中轴胎座。
Match the numbers in front of the placentation type (A-D) with the corresponding diagram.
请将胎座式类型（A-D）与相应的图匹配起来。
placentation axile; ovules 2 to numerous, anatropous.
中轴胎座胚珠2到多数，倒生；