如果是一般杂交,F1是紫苗紧穗黄种皮的植株,基因型应当为AaBbDd;但亲本发生了基因渐变,出现了紫苗松穗黄种皮(A bbD )的植株,显然,发生基因渐变的基因是母本的紧穗基因(B),由于基因渐变的罕见性,同时发生其他基因也渐变的可能性是极小的(即...
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The BBD Mattress Overlay is a highly versatile product. It has many unique features aimed at helping to preserve skin health.
BBD床垫是一种多用途的产品。它具有许多独一无二的特点旨在帮助保护皮肤健康。
BBD Ball mill is a widely used milling device in power plant system. It has the advantages of low energy consumption, high efficiency, widely range of grinding coal, and so on.
双进双出磨煤机是在电厂系统中广泛应用的一种制粉设备,它具有能耗低、生产效率高、研磨煤种范围广等优点。
In addition, BBD Ball mill milling system is a nonlinear, large delay, large inertia and strong coupling charged object, it is very difficult to implement optimization control.
此外,双进双出磨煤机制粉系统是一个非线性、大延迟、大惯性、强耦合的被控对象,其优化控制非常困难。
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