在有较大开口的情形中,还需选购背衬材料.A backing material is optionaland only needed for large openings.酚醛背衬阀座: 不可拆解, 抗拉伸,抗撞击.现场可更换.Phenolic Backed Seat: Non - collapsible, stretch resistant, blow out proof, field replaceable.剥离背衬膜.Peel of...
I suggest that you work out a careful rota which will make it clear who tidies the room on which day.我建议你制定一个详细的值班表，明确哪一天由谁整理房间。...the washing-up rota...洗碗轮值表Dave organized a cleaning rota.戴夫安排了打扫卫生轮值表。Be aware of the de...