material l hold up 物质滞留量
We can imagine that a lump of wet clay somehow ended up in the fire, dried out, hardened and formed a hollow shape; a shape that could hold things, in a tough material.
我们可以想象一块湿泥巴最后在火上烧制，烘干，变硬，形成一件形状中空的器皿，材料简陋，不过可以盛放东西。
The reformed one has made up for the defect that go down material slot hold up stuff easily, and avoid serious wear and tear.
提出了相应的改造方案，通过改造消除了下料溜槽易粘料的缺陷，避免了对筒体磨损严重的现象。
You may hold the glider during start up time but you are not allowed to touch the glider with any part of your body or material before passing the red line.
起步时，参赛者可用 手 扶著滑翔机，但越过红线之前，不能再用身体任何部份或任何物件接触滑翔机。
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