| 1. | He got his chair bottomed .
他让人给他的椅子装了底面。 |
| 2. | He connected metallic wires to the back and the underside of an electrical fish .
他在电鱼的背面和底面联上金属线。 |
| 3. | Alternatively it may be solely a method of forming a suitable background for painting .
也可能是为了使油漆有个适宜底面。 |
| 4. | B 、 what shape is the flank of a taper
圆锥的底面是（ ）形，圆锥有（ ）个底面。 |
| 5. | Light test capability : top , bottom and side
能迎合顶面、底面或侧面放射的光电产品。 |
| 6. | A box has a top , a bottom and four sides
盒子有顶面、底面和四个侧面 |
| 7. | Sapphire glass on the top and on the bottom ,
，蓝宝石表面与表底面。 |
| 8. | " is stamped on its lateral side
2地板底面有钢印标志“红日” 。 |
| 9. | Well done ! this is called point . this circle is called underside
师：很好，这个点叫做顶点。这个圆叫做底面。 |
| 10. | Slide block underside size mm
滑块底面尺寸mm |
