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但毛利率跟净利润率却在跌，其中毛利率在 2021 年为 38.1%，2024 年到了 36.8%，而 2019 年毛利率为 49.74%。
。同城约会对此有专业解读
04:23, 28 февраля 2026Путешествия
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His thesis at the Navy Academy was in the unheard-of topic of liquid-fuel engines. After graduation, he hoped to specialise in this pioneering new technology.