principal level
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美
- 特等
双语例句
- Production of glass fiber gypsum products, glass fiber is the Principal and senior gypsum powder as main raw material, together with the cast from high-performance additives.
公司生产的玻璃纤维石膏系列产品，是以特等玻璃纤维和高级石膏粉为主要原料，配以高性能添加剂浇铸而成。
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