用量及硫化条件和4010NA类防老剂相同,一般为二份.Dosage and vulcanization condition is the same as 4010 NA antiager.采用(WSLMB)的复合防老剂防老化效果较好.The combination of the phenolic antioxidants WSL and MB have better effects against the aging.讨论了防老剂的品种...
这套家具是由西卡莫木材、山毛榉木材以及皮革制成的。The furniture is made of sycamore, beech and leather.他们坐在一棵高大的山毛榉树下的草坪上。They were sitting on the lawn under a large beech tree.操作台是由结实的山毛榉木做成的。The worktop is made of solid beech....
Brush your teeth or dentures after meals and before bedtime.─进食后和就寝前请刷牙或刷洗假牙.Dentures require a strong fixative.粘假牙需用强力固定剂.Human jaws are called edentulous jaws when all teeth and to replaced by full dentures.人类的上下颌牙齿全部缺...
He lived long enough to see in the new millennium.他活到了新千年.The whole world was counting down to the new millennium.全世界都在倒计时迎接新千年的到来.Acupuncture was practised in China as long ago as the third millennium BC.中国早在公元前3,000年就已...