The formation mechanism is the flowing water trace to the source erosion-rock collapse-ancient slope withdrawal.

形成机制是流水溯源侵蚀—岩石块体崩塌—谷坡后退。

youdao

For verification of self owned instrument, we can trace to the source of nation standard via periodic verification.

对于自带仪表的检定，则通过定期送检，溯源到国家标准。

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First, this chapter introduced the Internet economy trace to the source, conception and its meaning. And it expounded further the banking Internet economy and its form.

论文首先介绍了网络经济的溯源、概念及内涵，从而进一步阐述了银行业网络经济及其具体表现形态。

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Where the material originates outside the UK, the Internet Watch Foundation will attempt to trace the source and pass details to the National Criminal Intelligence Service.

BBC: NEWS | UK | Policing the net

In particular, Clinton's leadership and gravitas are needed to implement an international certification scheme that enables companies to trace the source of the minerals to ensure that they aren't funding armed groups, and that allows consumers to choose which companies to give business to, based on their human rights record in Congo.

CNN: Your cell phone, Congo's misery

She said that, where possible, the WRU would attempt to trace the source of tickets on the black market and would take action against those found selling tickets at a profit.

BBC: NEWS | UK | Wales | South West Wales | Fans' anger at rugby ticket touts