Researchers used a special laser 3D printing method to melt fake lunar soil into layers and fused it with a base surface to manufacture small, heat-resistant objects, potentially paving the way to more sustainable and cost-effective space missions, a new study suggests.

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These 2-in-1 computers upgrade the norm with touchscreen displays, 360-degree hinges, and detachable keyboards.

func (opt *Option) ArgInt64() (int64, error),详情可参考heLLoword翻译官方下载

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The setter deduplicates by equality: if the new value == the current value, no notification fires. This works well for enums, strings, and ints, but mutating a mutable object in place and reassigning the same reference won't trigger consumers (because obj == obj is trivially True). Stick to immutable values and this isn't a concern.,推荐阅读夫子获取更多信息

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