2019/12/14 元宵节吃汤圆的来历 The Lantern Festival to eat glutinous ric
Lunar January fifteen to eat the lantern, " lantern " as food, is long-standing in our country. Song Dynasty, folk or a popular novel foods eaten during the Lantern festival. This kind of food, the first called "floating element " later called the "Lantern Festival ", also called "gold business ". L···
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2019/12/14 开云官方端网站登录入口 - 开云online(中国):防护用品--外壳防护等级（IP代码）
Dust level (the first X)0: no protection1: to prevent large solid intrusion2: to prevent the invasion of solid medium size3: prevent small solid into intrusion4: prevent solid objects greater than the entry of 1mm5: to prevent the accumulation of harmful dust6: completely prevent dust enteringWaterp···
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