双层

• On multiple impacts of two - layered sleeves
  带间隙双层套筒多次内碰撞的若干研究
• Phosphor g16 for double - decker screen indicator tubes
  双层屏指示管用g16荧光粉
• Phosphor g11 for double - decker screen indicator tubes
  双层屏指示管用g11荧光粉
• On multiple impacts of two - layered sleeves
  带间隙双层套筒多次内碰撞的若干研究
• Design and study of biomass briquette boiler
  双层炉排生物质成型燃料锅炉设计与研究
• A harsh double coat is absolutely necessary
  粗硬而浓密的双层毛是绝对必需的。
• The eyes should have double eyelids and be round
  眼睛要有双层眼睑,还要很圆
• Rear - engined air - conditioned double - deck three - axle
  后置引擎三轴双层空调巴士
• Polyester fibre ropes - double braid construction
  聚酯纤维绳索.双层编织结构
• Rear - engined double - deck three - axle air - conditioned
  后置引擎三轴双层空调巴士