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| 抗弯强度比 | |||
| 钻铤公母接头的弯曲强度比; 弯曲强度比 | |||
| English thesaurus | |||
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| BSR (tat-konovalova) | |||
| bending strength ratio: 1 phrase in 1 subject |
| Oil / petroleum | 1 |
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