Power generation means conversion of energy from a primary form to the electrical form.
发电就是将一次能源转变为电能。
The primary form without comorbidity is very rare.
无并发症的主要形式是非常罕见的。
His primary form of treatment was usually improving a patient's diet.
他最基本的治疗方式通常是改善病人的饮食。
The head injury was the primary form among the injury parts of the body(27.9%).
头部伤害在发生部位方面占首位（27.9%）；
Productive practice is an important link and primary form in vocational education.
生产实践是高职实践教学的主要形式和重要环节。
Productive practice is an important link and primary form in vocational education.
生产实践是高职实践教学的主要形式和重要环节。
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