空心

• Specifications for commercial hollow metal doors and frames
  商用空心金属门和框的规范
• Instead , the poles are entrances to the hollow earth
  相反两极是进入空心地球的入口。
• Clutch drive rings for shell end mill arbors
  空心端铣刀刀杆用离合器驱动环
• The clear diamond touching the class with control
  空心菱形在控制类这边。
• Iso hollow steel bars for machining iso specifications
  机械加工用空心钢棒
• The cranks are hollow , as you ' d expect
  而曲柄本身都是期望中的空心设计。
• Forges the kitchen knife , the hollow handle class wrap knife
  锻造厨刀、空心柄类套刀。
• Anti - crack measures of the concrete hollow block buildings
  混凝土空心砌块建筑的抗裂措施
• Core drills ; technical specifications for shell core drills
  空心钻.套式空心钻的技术规范
• Live working ; insulating hollow tubes for electrical purposes
  带电作业.电工用绝缘空心管