出土时间早、孵化时间长、龄期悬殊大是今年夏蝗发生的主要特点。
Hatching earlier but continuing longer time is chief characteristics of summer locust this year. The major reaso...
稀土在胚胎中的含量，随孵化时间增加而增加，但不同稀土元素其屏障作用差别较大。
The content of rare earth in embryo increased with the increasing of hatch period, however the barrier effect of different rare earth element was greatly different.
举例来说，处于胚胎时期的猪鼻龟会由其龟卵所埋之地的温度来决定其性别，而且已经发育完全的胚胎还能推迟它们的孵化时间。
For example, embryonic pig-nosed turtles become male or female depending on the temperature of the ground their eggs are laid in, while fully developed embryos can delay their hatching.
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