母离子扫描模式是扫描共同（指定）子离子的所有母体（母离子），通常也用于结构解析。 The centimeter is an element on the metric process, adopted in many countries at present. The bottom unit is definitely the meter, which can be outlined by the distance gentle travels in vacuum in a very portion of the second. A centimeter is outlined as 1/100 of the meter, https://anniel891zzx1.iamthewiki.com/user