precent怎么记

less than 40 precent of the population is restricted by the family planning policy to having one child, a senior population planning said.

一位资深的人口规划专家说，尽管由于计划生育政策的限制，也只有不到40%的人口的家庭才只是有一个孩子。

at precent , the tensive status of the relationship between hospital and patients has negative effects on medical quality and development.

当前，医患关系的紧张状况，不论对提高医疗质量还是对医学发展，都有消极的影响。

The final percentage roof subsidence factor is 54 precent, and the rise roof basally keeps integrity. The rise can be continuously used after local maintenance, and approximate 6 million yuan economic benefit is acquired.

在井下试验中，轨道上山顶板最终沉降率为54%，顶板基本保持完整，局部维修后可继续使用，取得经济效益600余万元。