envelopvt.包封;遮盖;包围
envelop feature extraction包络特征提取
enveloping surface of folds褶皱包络面
envelopment on double flanks合围
envelop a subject in mystery把某一问题弄得神秘莫测.
enveloping worm gear reducer球面蜗轮减速箱
enveloping worm-gear reducer球面蜗轮减速箱
envelop style strip packing machine信封式条状包装机