Objective To determine if calcium phosphate cement can enhance vertebral pedicle screw fixation in the osteoporotic spine through periodical anti-bending test.
目的本实验旨在从周期抗屈试验方面证实磷酸钙骨水泥对椎弓根螺钉固定的强化作用。
It was shown that if the proportion of water soluble phosphate was controlled properly, the fixation of phosphate in soil would be decreased, and the effect of fertilization would be improved.
说明控制化肥中适当的水溶磷比例，可以减少土壤对磷的固定，提高施肥效果。
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