The acid-test ratio is a financial metric that assesses a company’s ability to cover short-term liabilities with its most liquid assets. A higher acid-test ratio suggests a stronger liquidity position ...

代码已经复制到剪贴板。 我有个朋友，做得一手好菜，每次朋友聚会她都专门负责掌勺。现在她考虑自己开饭馆，不过她做事很谨慎，想先试试自己有没有这个本事。这让我想到一个习惯用语：acid test. Acid test意思是关键性的测试。我朋友厨艺不凡，但开饭馆可 ...

New Haven, Conn. — Scientists at Yale and in Singapore have devised what may be the ultimate acid test — a comprehensive model for estimating the origins of Earth’s habitability, based in part on ...

Scientists at Yale and in Singapore have devised what may be the ultimate acid test — a comprehensive model for estimating the origins of Earth’s habitability, based in part on ocean acidity. The new ...

Scientists at Yale and in Singapore have devised what may be the ultimate acid test—a comprehensive model for estimating the origins of Earth's habitability, based in part on ocean acidity. The new ...

The pH scale is used to measure the acidity of a fluid. The pH scale ranges from 0 to 14. A pH of 7 is neutral, whereas a pH result below 7 is acidic and above 7 is alkaline. Urine has the widest ...

When lubricating oils are utilized in various machinery equipment, they are often subject to the harsh conditions including elevated temperatures and varying oxidation levels. As a result of these ...