Recently implemented "shift-work equations" based on studies of the human sleep cycle have reduced sickness, sleeping on the job, fatigue among shift workers, and have raised production efficiency in various industries.
Recently implemented "shift-worker equations" based on studies of the human sleep cycle have reduced sickness, sleeping in the job, fatigue among shift workers, and have raised production efficiency in various industies. A B fatigue among shift workers, and raised C and fatigue among shift workers while raising D lowered fatigue among shift workers, and raised E and fatigue among shift workers was lowered while raising
这样看这个句子'"shift-worker equations" have reduced sickness[phrase2 +, and phrase 3] while raising production efficiency in various industries.' 对称的是插入的几个phrases,而不是"while"