| 摘要 |
<p>The polybasic powder contains nitric acid ester, plasticisers, stabilisers, burn-off controllers and low molecular nitrocellulose with a viscosity below 18 cP, pref. below 12 cP. Pref. a solution of low-molecular nitrocellulose acts on dry, polybasic powders for 5-10 mins. This is then deformed.</p> |
