span-20

基本解釋

The optimal HLB was found to be 11.76 by evaluation of 10% butachlor EW, which was emulsified by the different HLB emulsifier consisted of Span 20 and Tween 20. According to the optimal HLB, different emulsifiers were studied.
對10%25丁草胺水乳劑;采用Span20和Tween20復(fù)配系列不同HLB乳化劑的方法;發(fā)現(xiàn)水乳劑體系的最佳HLB值為11.;76。
The time that the bribery scandal that is exposed this spanned 20 years.
此次被揭露的賄賂丑聞跨越了20年的時(shí)間。
Circle of the Empyreal sovereignty now spans 20 star systems within 100 light years of New Delta with a total population of 16.5 billion Centaurus citizens.
崇高界政權(quán)在在一百光年之內(nèi)，擴(kuò)展了20個行星系統(tǒng)，半人馬星座居民的總數(shù)達(dá)到163億。
Modern medicine has increased man's life span.
現(xiàn)代醫(yī)學(xué)延長了人的壽命。
The arch has a span of 60 metres.
那個拱的跨度為60米。