The concept of e-loyalty was proposed at the beginning of 21 century, which gave a punch to manage.

电子忠诚度的概念在21世纪初网络经济兴起的鼎盛时期被提出，给电子商务的从业者一记重击。

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It is pointed out that CSP technology is probably to be improved further replace the conventional casting process at the beginning of 21 st century by its high profitability.

由于CSP技术高的经济效益，在2 1世纪初该技术将强化它替代传统连铸工艺的趋向。

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