smokeless powder造句
1. Smokeless powder, for which there are many formulas, is used in modern ammunition.
2. The Americans did not have the smokeless powder.
3. The nicramine ethers perform two functions in the smokeless powder composition.
4. A cellulose nitrate used as a component of smokeless powder.
5. Smokeless powder refers to colloided nitrocellulose either alone or in admixture with nitroglycerin or other material.