A non-volatile solid or semi-solid substance apt to be deposited by some petroleum products when stored for long periods or heated, and formed by…
| 单词 | θ73144 |
| 释义 | the world > matter > constitution of matter > density or solidity > viscosity > [noun] > viscous substance > from petroleum products (1) gum1922 A non-volatile solid or semi-solid substance apt to be deposited by some petroleum products when stored for long periods or heated, and formed by… |
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