ddst的音标

The improved DDST intelligence examination was done on 67 cases of endemic cretinism in Qinghai through random sampling and had got developmental quotient ( DQ).

通过随机抽样对青海省67例地克病患者做改进后的DDST智能检查，取得发育商。

And the performance of TDM, ST and DDST is compared by training sequence selection, channel estimation MSE, data detection BER and system throughput.

论文从训练序列选择，信道估计性能，信道容量以及信号检测误码率和系统吞吐率等方面比较了TDM，ST和DDST的性能。

Both groups were given NBNA examination before and after treatment ( mean interval was 12 days), also given DDST examination for follow-up.

两组治疗前后行NBNA检查（平均间隔12d），并用丹佛发育筛查法进行随访。