基本解释[材料科学]断面负荷英汉例句双语例句Methods: A total of 514 clinical nurses from a tertiary hospital were investigated in a cross-sectional study by self rating anxiety scale (SAS);方法：应用焦虑自评量表对兰州市某三甲医院514名临床护士进行横断面问卷调查；cross-sectional rating更多例句专业释义材料科学断面负荷