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单词
mechanical yielding prop
释义
mechanical yielding prop
mechanical yielding prop
[
mi′kan·ə·kəl ′yēld·iŋ ‚präp
]
(mining engineering)
A steel prop in which yield is controlled by friction between two sliding surfaces or telescopic tubes. Also known as friction yielding prop.
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更新时间:2025/4/1 8:53:17