由于单循环频率循环估计子估计性能对循环频率的选择有较大的依赖性，使其在实际应用中受到了较大的限制。
Single-cycle time-delay estimator suffers from the dependence on the selection of different cycle frequencies, which restricts its practical usage.
结论：地尔硫对人体房室结功能影响具有快频率依赖性特点，这种作用使其在心动过速时选择性抑制房室结。
Conclusion: Diltiazem depresses human atrioventricular nodal function in frequency-dependent manner, these effects lead to highly selective depression of AV nodal function during tachycardias.
应用推荐