Lan se pi li hou 蓝色霹雳火
keo pi ju se yo 请给我一杯咖啡
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The basic process of brake friction lining production with siliceous lime and se PI -olite and product performances are studied deeply.
深入研究了硅石灰和海泡石制备制动摩擦片的基本工艺及性能。
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