给出了最佳探伤效果时的浓度值。
The value of concentration when the flaw detection effect is the best is given.
各种污染物日平均浓度值与地面风速相关也非常好。
Daily average concentration of various pollutants also has a close correlation with ground wind velocity.
研究了淋洗液浓度对保留值的影响，当淋洗液浓度增大时，保留值减小。
The effect of the eluent concentration on retention value was studied.
文章还称PM 2.5浓度的最高值一般在冬季，夏季期间有所下降。
Thee article also said the density of PM2.5 generally peaks in winter and drops during summer.
文章还称PM 2.5浓度的最高值一般在冬季，夏季期间有所下降。
Thee article also said the density of PM2.5 generally peaks in winter and drops during summer.
应用推荐