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| 刚性支承 | |||
| 刚性支架不具有可缩性的材料及结构,在地压作用下变形或位移很小的支架 | |||
| 刚性支架 | |||
| 刚性支座; 刚性支护; 刚性支点; 刚性支持 | |||
| rigid support: 1 phrase in 1 subject |
| Technology | 1 |
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