求翻译：中国有很多关于电缆的国标规范，在实际选用时，我们一般指定电缆的型号。如果需要屏蔽层，也会明确屏蔽层的型号。以满足现场铺设的需要是什么意思？

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There is a lot of information about the country, and in actual practice, we use a General Cable type specified. If you need to shield, and will also be clear shield model. In order to meet the needs on-site construction

China has very many about the electric cable GB code standard, selects when the reality, we assign the electric cable generally the model.If needs the shielding layer, also can be clear about the shielding layer the model.Meets the needs which the scene lays down

There have been many Chinese GB specifications on cable, when in actual use, we generally specify cable types. If you need to shield, also clear shield model. To meet the needs of field laying

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