XPS foamed board, has a perfect closed - pore alveolate structure.XPS挤出聚苯乙烯发泡板材, 具有完美的闭孔蜂窝状结构.An alveolate coordinate system which reflects actual distribution law of shell arrangement was proposed.提出了蜂窝网格坐标系,该坐标系客观反映了炮弹...
He was described by his seniors as a model officer.上司们形容他是个模范官员。The seniors organizations sent out mailings to their constituencies.老年人组织向各自的会员寄送了邮件。We should not set light by the advice of our seniors.对于长辈的规劝,我们不应轻视....