九的六次幂是多少?How much is the sixth power of nine?2的3次幂是8.The cube of 2 is 8.如果愿意的话,我们也可用幂级数法解题.We can solve it with the power - series method if we want....
用测听仪器检测受调查儿童.The hearing screening of the children surveyed by audiometry instruments.言语测听法采用专门编制的测听词表来检查患耳的言语识别率.Speech audiometry adopts special testing speech tables to measure patients speech discrimination score.本文介...