Web performance expert Steve Tack says retailers have worked hard to deliver an online shopping season free of the website crashes and technical problems common in previous years.
网络表现专家Steve Tack表示零售商们都努力让在线购物季不会受到网络崩溃和技术问题的影响。而这两件事在往年还是很常见的。
I know his temper, like hard tack as cold and hard, and often you angry, in fact, that's not my intention.
我知道自己的脾气，像压缩饼干一样又冷又硬，常常惹你生气，其实那并不是我的本意。
The effects of propdrtion of soft and hard monomer, the content of functional monomer and emulsifier on the viscosity, ball tack and hold tack, peeling strength of adhesives were discussed.
并且讨论了软、硬单体配比，宫能单体含量及乳化剂用量等因素对压敏胶粘度、快粘力、持粘力、剥离强度等性能的影响。
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