selffacedadj.天然表面的(未修整的)selfn.自己；本性；自我pron.我自己；你自己；他或她自己adj.始终如一的；同一类型的；性质不变的v.近亲繁殖；自花授粉self- identity of culture文化认同self-reexciting mechanism自我再兴奋机制self-liquidating purchase自行清偿的购置费用self-weight consolidation自重固结self-desludging clarifier自动排渣式净化器self-scanned image sensor自扫描图像传感器,自扫描成像器件self defeating antiantibody自身破坏性抗抗体self-education capability自我教育能力Self-matching coefficient自匹配系数self-balanced charge pump自平衡电荷泵

1. The cable sag caused by cable dead weight is vertical.
   由钢索自重引起的垂度是竖向的。
2. We know that a stationary object exerts force by virtue of its weight.
   我们知道静止物体由自重而产生压力。