mass concentration

基本解釋

The particle mass concentration rises with the increase of particle diameter.
飛灰質量濃度隨著顆粒粒徑的增大而增加。
The better result of refining and dewaxing was achieved by using the ethanol solution with mass concentration of 70%.
本文采用質量濃度為70%的稀乙醇進行精制除蠟，效果較佳。
The stellar orbits in the galactic centre show that the central mass concentration of four million solar masses must be a black hole, beyond any reasonable doubt.
銀河系中心恒星的運行軌道表明，這個有4億個類似太陽系的天體圍繞的中心體一定是一個黑洞，這是毫無疑問的。

No one has ever forcibly moved that many people without concentration camps and mass death through plague.
FORBES: The Republican Party Needs A Reset On Immigration
In an article last month in Forbes, Reza Kahlili, a former CIA spy in the IRGC who maintains connections inside the regime, claimed that the IRGC has set up concentration camps throughout the country in anticipation of mass arrests in any future opposition campaign against the regime.
CENTERFORSECURITYPOLICY: A war on whose terms?
Most had escaped from hidden concentration camps where they suffered and witnessed routine torture, mass-execution, baby-killing, rape, human biological experiments (including the effects of anthrax) and, of course, starvation.
CENTERFORSECURITYPOLICY: Center for Security Policy

質量濃度
Visibility was negatively correlated with the number density of particles and PM2.5 mass concentration.
2.能見度與顆粒物數濃度、PM2.5質量濃度存在明顯負相關性。
化學
質量濃度
Furthermore voltage, reaction temperature and amine mass concentration are important exterior factor which effect electrolysis.
此外，電壓、反應溫度、胺的質量濃度等均是影響反應的重要外部因素。
質量液體濃度