extenders西文字的延伸部分extendv.延伸；延长；伸展；扩展；提供；使竭尽全力extended DBD algorithm扩展DBD算法extended function bloc扩展功能块extend expiration date展延有效期extended electron beam展宽电子束,宽束extended superquadrics扩展的超二次曲面extended residue ratio扩展留数比Extending Questionaire问卷调查Extended fertilization长期施肥extended complex plane扩充复平面extend the olivebranch伸出橄榄枝,表示准备讲和