未知题型
A、弹性模量B、表面能C、泊松比D、裂纹半长正确答案:泊松比
某连续LTI系统的系统函数为,若系统不稳定,则该系统一定是因果的。A.正确 B.错误
不定项选择某连续LTI系统的系统函数为,若系统不稳定,则该系统一定是因果的。
A minimal pair consists of two words with the same mean...
判断题A minimal pair consists of two words with the same meaning which differ from each other by only one distinctive sound.
根据格里菲斯微裂纹理论,当单位面积释放的弹性应变能小于形成新表面所需的表面能时,将发生
未知题型根据格里菲斯微裂纹理论,当单位面积释放的弹性应变能小于形成新表面所需的表面能时,将发生