In the purewave tests different models present different change on the force after added weigh.
在纯波条件下,增加配重后,不同模型的受力表现出不同的规律。
2
Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency.
假定两个扬声器都发射恒定频率的纯正弦声波。
3
Methods patients were randomly assigned to electrocardiogram ST section change group(A) or pure T wave change group(B), receiving coronary angiography.