weight-bearing 基本例句 承重; 支重 They should also do20 minutes of ' weight-bearing exercise' three or four times a week. 此外，还需要做二十分钟左右的负重身体锻炼，频率大概是每周三到四次。 cri A new kind of biodegradable internal fixation device with high initial strength and slow early degradation, which can be used for weight-bearing bones, is required. 研究一种具有较高的初始力学强度和早期降解速度缓慢，并能用于承重骨内固定的器材是临床所需要的。 cnki