floor r sleeve 楼板的套筒
"Starved and frozen," he wrote, "I huddled on the stone floor, making a sort of tent of my verminous coat, breathing into a sleeve to warm my body and made poems all day long."
在满是寄生虫的单衣‘帐篷’内,我靠呼吸取暖,灵感如潮水般涌来、写诗成为我的一切。
Then concrete is poured, and the sleeve is pre-embedded in the prestressed hollow floor slab;
然后浇筑混凝土,将套管预埋在预应力空心楼板内;
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