The two sides exchanged fire with artillery, mortars and small arms...双方交火时动用了大炮、迫击炮和轻武器。They could not move their heavy mortars over the swampy ground.他们无法把重型迫击炮移过那片沼泽地.Rockets, mortars and artillery rounds rained on bu...
过氧化苯甲酰 、 特别是偶氧二异丁腈不参加链移反应.Benzoylperoxide, and especially azobisisobutyronitrile, do not take part in transfer reactions.聚乙烯醇 的耐辐解可通地苄叉化和苯甲酰化提高.Poly ( vinyl alcohol ) has been protected against radiation by benzalation a...