A.1% B.1.5% C.2% D.2.5%
A.1.0倍 B.1.2倍 C.1.5倍 D.2.0倍
A.90% B.95% C.96% D.98%
A.50MΩ B.100MΩ C.150MΩ D.200MΩ
A.0.5% B.1.0% C.1.5% D.2.0%
A.1kΩ B.2kΩ C.5kΩ D.10kΩ
模态的特征参数,即振动系统的各阶固有频率、振型、模态质量、模态刚度和模态阻尼。
A.15min B.10m inC.5min D.20min
A.0.8MPa倍 B.0.9MPa C.1.0MPa D.1.1MPa