The strength and deflection of putlog as easy supporting girder, and the ledger is over and supported by putlog.
小横杆按照简支梁进行强和
算,大横杆在小横杆的上面。
The strength and deflection of putlog as easy supporting girder, and the ledger is over and supported by putlog.
小横杆按照简支梁进行强和
算,大横杆在小横杆的上面。
He cut a branch from a tree and made a whiffle-tree of it.
他砍了一树枝,做了一
拴挽带的横杆。
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