任何时候遇到新的开发工具或者IDE时，您必须经历学习曲线才能达到具有一定生产率水平的程度。

Any time you're faced with a new development tool, or IDE, you have to go through a learning curve just to get to the point where you can be productive.

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本文依据一年来的室内1000组混凝土试件试验，率定出混凝土强度(r)与应力波速(V)相关公式及曲线，在工程检测精确计算中具一定的参考价值。

Based on the experiments of 1000 sets of concrete parts in room for a year, the relations formula and curve for concrete strength (r) and stress wave velocity (v) are determined.

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存活率曲线与存活曲线在概念上有一定的区别。

There are some discrepancies between the proportion surviving curves and survivorship curves.

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