标签：Magnes - 英国华人论坛

The main component of magnesia is carbonate magnetite. Dolomite’s main component is the crystals of MgCO3 CaCO3, accounting for 3.65-3.9 in artificial marble.The melting point is 2800 and the relative molecular weight is 40.3, according to...英国华人论坛

BY TERI WALSHTo protect your bones from osteoporosis, look beyond calcium, suggests a study published in the Journal of the American Geriatrics Society. After studying more than 2,000 men and women ages 70 to 79, researchers learned people c...英国华人论坛