class B
| insulation
| class B | |
| busin. | B类; B级; 乙类; 乙级 |
| insulation | |
| ecol. | 保温层 |
| el.mach. | 绝缘体; 绝缘性能 |
| environ. | 绝缘 |
| hydroel.st. | 绝热性 |
| hydroel.st. од. | 绝缘 |
| met. | 绝热; 隔热层 |
| met. од. | 保温 |
| space | 绝缘材料 |
| |||
| B类; B级; 乙类; 乙级 | |||
| 乙组 | |||
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class B : 58 phrases in 18 subjects |