发明授权
US3506505A Nitrocellulose base propellant coated with graphite,plasticizer,and inorganic pigment 失效
用石墨,增塑剂和无机颜料涂覆的纳米纤维素基础

Nitrocellulose base propellant coated with graphite,plasticizer,and inorganic pigment
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