The paper analyses the quality problem existing in bottling pile, and presents the effective pre-control measures, which can provide reference for similar works.

针对灌注桩可能出现的质量问题，提出有效地预控措施，可供同类工程借鉴。

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In this paper, the problem of pre-trigger existing in dynamic spot welding self-adaptive control system is researched on the basis of experiments.

对动态电阻点焊自适应控制系统中存在的提前触发问题进行了实验研究。

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In this paper, we investigated the problem of non-coplanar growth of a pre-existing straight crack under biaxial compressive loading.

本文研究了双向压缩加载条件下孤立裂纹的非共面扩展问题。

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If - I believe that if there was a pre-existing problem it was one that developed in that when he broke through the gate and, you know, and had to be pulled up and then was returned to the starting gate.

NPR: Heartbreak at the Preakness Stakes

In concert with these fundamental reforms that address the root cause of the pre-existing condition problem, the Romney plan contains patches for people who are currently stuck with a pre-existing condition today.

FORBES: Why Mitt Romney's Plan for Pre-Existing Conditions is Better Than Obamacare's

That the Administration is content with high-risk pool enrollment of just over 50, 000 persons with pre-existing conditions shows that the problem of individuals with pre-existing conditions is real, but not insurmountable.

FORBES: Report: Obamacare's High-Risk Pool Spending Doubles Government Estimates