Fluoride is one of the ingredients of Glister Multi - Action Fluoride Toothpaste.丽齿健?素牙膏亦含有氟这一种成份.Fluoride injury often is characterized by tip burn of leaves.氟化物危害的特点是叶片顶尖灼燃现象.A method of producing crystal sodium fluori...
Fluoride damage is generally restricted to areas near manufacturing plants.氟化物的危害一般局限在制造厂的附近.It'shows a thousandfold selectivity for fluoride over other common anions.它对氟离子的选择性比其它普通阴离子高几千倍.Fluoride injury often is c...
In Petersburg, 30 patrolmen have died violently in the past five years.在彼得斯堡，过去5年中有30名巡警死于暴力事件。The residents of Leningrad voted to restore the city's original name of St Petersburg.列宁格勒市的居民投票决定恢复该市原来的名字——圣彼得堡。So tho...
The melting point was measured by differential scanning calorimeter ( DSC ) .用差示扫描量热仪(DSC ) 测试了树脂的熔点.Self - heating of two typical n - alkane ( n - heptane and n - hexadecane ) is studied by Accelerating Rate Calorimeter...