Then the influence to the strength of mix proportion, period and density of pile are analyzed.
分析了配合比、龄期及密实度对桩体强度的影响。
·2,447,543篇论文数据，部分数据来源于NoteExpress
According to the Lords, a target for the proportion of renewables in the energy mix up to 2030 is rapidly required.
BBC: Environment correspondent, BBC News
By 2020, it sees that dropping to about 35 per cent as the proportion of renewables in the energy mix rises.
CNN: Shale gas boom sparks EU coal revival
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