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| 11. | advantages of electrical heating (high temperatures, rapid heating rates) with those of convection heating (uniform |
| 该系统同时具备了电热元件的优点（高温、加热速度快）和对流加热的优点（通过气体循环使温度分布一致）。 |
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| 12. | : Hand-made and good machine made writing and brown paper, dried slowly by exposure to the air at a uniform |
| 气干纸:手造纸，优质机制书写纸和褐色包装纸在平均温度下让空气把它吹干。这样，纸的水份含量与空气平衡。 |
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