任选的是, 可用加氢催化剂将纯化的二聚异丁烯加氢生成异辛烷.Optionally, the purified diisobutylene may be hydrogenated to isooctane hydrogenation catalyst.应用正碳离子聚合的方法合成新型聚异丁烯遥爪预聚物.The new telechelic prepolymers of polyisobutylene have been synthesize...
discoloration caused by the sun因日照引起的退色Valuably diminishes dark circle and discoloration for clear eyes.消除黑眼圈、晦暗,创造明亮的眼眸.Erythema, edema and a purple discoloration of the eyelids are of dermatomyositis.眼睑红斑 、 水肿、淡紫色是皮肌炎的...
Proliferation of lymphocytes in lacrimal and salivary glands may cause bilateral painless enlargement.泪腺和唾液腺淋巴细胞增生,可引起两侧腺体无痛性肿大.House-hunting is in fact relatively painless in this region...在这个地区找房子事实上相对比较容易。The operatio...