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- The negative air ion concentration in different communities were as follows: lower greenbelt>woodland>weed land>bald land>concrete piazza. 不同植被类型由高到低依次为：花卉绿地＞林地＞宜林荒草地＞裸露地＞水泥广场；
- "Red Marshal" apples stored for 132 days after they were treated with negtive air ions the intact fruit ratio is 88. 2%. It is 5. 6% , 19. 8% and 28% higher than that of apples treated with positive ions and ozone and the control respectively. 红元帅苹果经不同空气离子处理;在常温下贮藏132天后;负离子处理的好果率为88.;2%25;分别比正离子、臭氧、对照高5
- electrically generated negative air ions (ENIs) 空气负离子
- Study on Variation of Air Ions Concentration in Airtight Darkroom 密闭暗房内空气离子浓度变化规律
- The air in the garden was warm and fragrant. 花园里的空气一片温馨。
- The archers sent their shafts through the air. 弓箭手向空中射出利箭。
- Fixing and Negative Air Ion Effect on Silk by Sol-Gel Process 溶胶凝胶法对真丝绸的固色及负离子效应
- Methodological Study on Measurement of Negative Air Ion 空气负离子剂量测量方法的探讨
- General specification for air ion measuring instruments 空气离子测量仪通用规范
- The lack of air in the room make everyone sniffle. 屋子里空气缺乏，使得每个人都频频吸气。
- During the intermission, let's go out for some fresh air. 幕间休息时，我们出去呼吸呼吸新鲜空气吧。
- The air held a foretaste of a storm. 天气有要括大风的迹象。
- The air was reeking with the smell of tobacco. 空气中弥漫着烟草的气味。
- A walk in the fresh air will pep me up. 我在空气新鲜的地方散步就感到精神饱满。
- He served one month with the Air Army in Kuwait. 他在科威特的空军里服役1个月。
- Large air and navel forces were set into action. 庞大的空军和海军部队开始行动了。
- His modesty [air of joviality] was all put on. 他的谦逊[愉快的样子]都是装出来的。
- Ida was choking with the dry air. 空气干燥，艾达感到喘不过气来。
- His vibrant voice commove the air. 他响亮的声音振动了空气。
- Fresh air and exercise are good for the health. 新鲜空气和运动有益于健康。
