“after-sales and maintenance services”的概念、定义、翻译、参考文献-科学参考

单词	after-sales and maintenance services
释义	after-sales and maintenance services Encyclopedia 理学生产性服务释 after-sales and maintenance services售后与维修服务在商品出售以后所提供的各种服务活动和维修活动。
随便看	unbalanced operation of hydro-generator unit unbalanced transportation problem unbalance response unballast unballasted pumping speed unbased mapping unbated unbiased unbiased confidence estimation unbiased confidence interval unbiased confidence region unbiased critical region unbiased distribution of resources unbiased error unbiased estimate unbiased estimating equation unbiased estimation unbiased estimator unbiased ferrite unbiased function unbiased level α-test unbiasedness unbiased point estimator unbiased prediction unbiased regression estimator

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。