Since 1987, China has carried out seed breeding tests on nine satellites.
从1987年起，中国相继进行了九次太空育种实验。
In breeding tests, the trait turned up in about 40 percent of the unusual mouse's offspring.
通过繁殖实验发现，大约40%此类不寻常小鼠的后代可以保持这种特性。
The basic data on the metabolism and utilization of energy and protein of the breeding RAMS were obtained by feeding experiments, digestion and metabolism trials and breeding tests.
采用饲养试验、消化代谢试验和配种试验相结合的方法，测定了成年种公羊能量和蛋白质代谢的基础数据。
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