更多caoutchouc例句

1. This is best done either with zinc or with a solution of caoutchouc in benzine.
2. Pieces of caoutchouc are cut to the required size and laid upon the matrix.
3. But as the caoutchouc has a tendency to return to its previous shape it becomes necessary to apply the process called vulcanizing.
4. The forests yield cinchona bark, caoutchouc, sarsaparilla, and vegetable ivory.
5. In the second case, stouter caoutchouc should be used in the construction of the tube.