许多小河的水已经漫过堤岸，造成一些道路不能通行。Many streams have flooded their banks, making some roads impassable.花园的尽头有一条小河。There was a small stream at the end of the garden.我们穿过架在蜿蜒小河上的一座小铁桥。We crossed a small iron bridge over a meandering ...
After a bath or shower rub down the whole body with a loofah.在洗澡或淋浴后，用丝瓜络按摩身体。Loofah body is uneven, the head also wore a yellow color of the flowers.丝瓜身上是凹凸不平的, 头上还顶着个黄颜色的小花....
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...