lún zhōu ㄌㄨㄣˊ ㄓㄡ 轮周（轮周） 圆周。清 龚自珍 《乙丙之际塾议第十六》：“请定后王式：日泉式，其质青铜，其轮周二寸半，其重八铢。”
下去的一轮周吕鑫又创造了一个记录。
它中间有一细腰木轴，两端各连一空心圆轮，轮周开几个方形哨口。
It is the middle of a slender wooden shaft with a hollow circle at both ends of each round, round a few weeks to open mouth square posts.
文中推导了径流式透平的轮周效率表达式，阐述了径流式透平冲动式级的概念。
An expression for the efficiency of the wheel periphery of the radial turbine and a discussion of the concept of the degree of reaction of the radial impulse stage are given.
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