911查询·英语单词
名词发情; 动情期，动情周期
1. 动情期：由雌羚会在动情期(estrus)第一天进入交配区和一只或多只雄羚进行交配. 在交配区中,由居领导权的雄性主控,但当它精疲力尽(losestamina)时,其他雄羚就会取而代之. 在九月至次年的二月雨季时交配. 雌羚一岁半已达可交配性成熟,
2. 发情：例如,(白人女子)14岁时唇裂最大,为19.4毫米,到18岁降至18.1毫米;女子的雌激素水平越高,嘴越小而唇越厚,这便是性感的证明(Johnston&Franlin:同前),因为雌激素(estrogen)本身也叫动情素,与雌性动物发情(estrus)有相同的词根.
3. 发情期：以阴部红肿及 排出血样分泌物为特征. 2.发情期(Estrus): 紧接于发情前期,母犬接受公犬交配,自发性排卵在发情期前段发生. 母犬若未受
4. 看我其他帖子动情期：6 楼 Date:2007-09-15 15:11:04 | 看我其他帖子动情期 estrus | 动情前期 proestrus
1. The female's estrus period comes just once a year, and she is receptive for only a few days.
2. Female pandas normally enter estrus aged four or five and have only one chance for pregnancy a year.
3. Female pandas normally enter estrus at age four or five and have only one chance for pregnancy a year.
4. If a female panda at Chengdu Zoo entered estrus, the zoo would borrow a male from Beijing Zoo immediately and put them together.