一段美满的恋情需要彼此关心并体恤对方的情感。A good relationship involves concern and sensitivity for each other's feelings.通常，只有在母亲面前他的情感才会如此外露。Normally, such an outward display of affection is reserved for his mother.我往往不相信自己的情感，倾向于把一切事...
The cyanate Resin is modificated by styrene and divinyl benzene , which are called active diluent.以苯乙烯和二乙烯基苯作为氰酸酯树脂的活性稀释剂,得到粘度低、贮存稳定性好的改性树脂体系.Yttrium serves as an ideal non - magnetic diluent for the rare - earth metals....