by mass meaning in English
以质量计
Examples
- We were hopelessly outnumbered, beset by masses of armour, and almost surrounded .
兵力过于悬殊，受到大批装甲部队的围攻，我们几乎被包围了。 - Both ion diffusion and transport of ions to the root surface by mass flow appear to be dependent on soil moisture content .
离子扩散和通过质体流动把离子运送到根表面，看来似乎都取决于土壤的含水量。 - Dioxide sulphur determination by mass spectrometry
用质谱仪法测定二氧化硫