在整个使用寿命中，一件含聚酯成分的罩衫要比一件棉制T恤更节约能源。
Over a lifetime, a polyester blouse uses less energy than a cotton T-shirt.
口腔护理试剂可以在一次使用中、在多次使用中、或在工具的整个使用寿命中释放。
The oral care agents can be released during one use, during multiple USES, or throughout the life of the instrument.
SG (B)10是采用杜邦NOMEX纸为基础的绝缘系统，在变压器的整个使用寿命期都保持极佳的电气性能和机械性能。
Dupont NOMEX paper is used as base of SG (b) 10 insulating system, it keeps excellent electrical and mechanical performance during service lifetime of transformer.
在北欧国家，由于供暖的水质和水处理有很高的标准，整个集中供暖系统的使用寿命都可预期在50年。
On the basis of a high standard on the water quality and water treatment, a service life of 30-50 years is anticipated for the whole central heating system.
在北欧国家，由于供暖的水质和水处理有很高的标准，整个集中供暖系统的使用寿命都可预期在50年。
On the basis of a high standard on the water quality and water treatment, a service life of 30-50 years is anticipated for the whole central heating system.
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