欧洲的有害物质限制(RoHS)指令限定了在欧盟国家出售的新的电子产品中使用许多有毒原料。

In Europe the Restriction of Hazardous Substances (RoHS) directive limits the use of many toxic materials in new electronic products sold in the European Union.

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注意，这种intrinsic通常与对应的汇编语言指令具有相同的限制。

Note that the intrinsics generally have the same limitations as their corresponding assembly language instructions.

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一些限制在于每个文档的不同标记限制为 253 个，并且不处理属性和处理指令。

Some limitations are that each document is limited to 253 distinct tags, and that attributes and processing instructions are not handled.

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