bearing bearing of pile
桩的承载力
聚对苯二甲酸乙二醇酯(PET)
聚对苯二甲酸乙二醇酯
collar band is longer than collar
collar band is shorter than collar
Contraction Shift Strategy
13 C NMR chemical shift
13)C NMR chemical shift
13C NMR chemical shift
13C NMR谱化学位移
13CNMR化学位移
13CNMR谱化学位移
17O chemical shift ferrocene derivative
31P nuclear magnetic resonance chemical shift
90-degree phase shift method
Absorption edge blue shift
accumulator right shift