The colorimetric methods involve the bleaching of a preformed color by the fluoride ion.比色法涉及氟离子对预先形成的颜色的消色作用.In no way am I going to adopt any of his methods.我绝对不会采纳他的任何方法。...traditional teaching methods.传统教学方法According...
Despite his unconventional methods, he has inspired pupils more than anyone else.尽管他的方法不同寻常，但他给予学生的激励比其他人都要多。There may be alternative methods of substantiation other than written records.除书面记录外，可能还有其他方法可以证实。Traditional s...