两次性成熟
- 与 两次性成熟 相关的网络例句 [注：此内容来源于网络，仅供参考]
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Specimens were examined by histological method to determine the cycle of the gonad development of this nemertean. The results showed that: The sex ratio (female: male) was about 1: 1. The sizes of mature males and females were not significantly different; females are rosy in colour and males are white, largely owing to the metamerically arranged gonads. Gonads, which were not detected in samples of autumn months, arose in December, but sexes were indistinguishable until middle January.
结果表明：扁额原细首纽虫雌雄比例约为1：1；雌雄体长、体重无显著差异；性成熟雌体通常体壁呈玫瑰红色，雄体呈白色，非繁殖季节雌雄体色无明显差异；一年有两次性腺发育，第一次12月开始出现性腺，1月可辨雌雄，3月15日达到第一次性腺发育高峰，4月15日性腺消失；第二次于4～5月开始出现性腺，6月15～30日达到高峰，9～10月性腺消失。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想，是邓小平经济理论体系中的重要组成部分，是我国经济建设根本任务的一个重要方面。