The need for training is determined by the employee's performance deficiency.
是否需要进行培训是由员工的绩效表现是否理想来确定的。
Changes in egg shape, flock performance, and characteristics of occurrence were observed in caged layers affected by early calcium deficiency.
本文对专业户笼养蛋鸡早期钙乏症所出现的蛋形变化、鸡群表现，发生特点过行了观察。
The article introduces process and structure of the tilting furnace, enumerates the main performance parameters and points out its advantage and deficiency.
本文介绍了倾动炉精炼杂铜的工艺过程及倾动炉的炉体结构，列举了倾动炉的主要性能参数，并指出其优点及不足。
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