The structure and mechanical properties of silica sponge spicule found in China Bo-hai were studied.
研究了我国渤海海域发现的一种硅质海绵骨针的结构和力学性能。
It was important to select replacement bulls of 18-month-old based on their growth and development and progeny testing in bo-hai Black Cattle.
根据生长发育和后裔性能测定选择18月龄后备种牛是渤海黑牛选择的重点。
It was important to select replacement bulls of 18-month-old based on their growth and development and progeny testing in bo-hai Black Cattle.
根据生长发育和后裔性能测定选择18月龄后备种牛是渤海黑牛选择的重点。
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