The minimum sampling area of a major plant community in Meiziya Region was studied by using methods of species area curves and community coefficient area curves.

用种面积曲线和群落系数面积曲线的方法对宜昌梅子垭地区一种主要植物群落类型的最小面积进行了研究。

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Voltage Reference in the design, how to achieve high-precision, low temperature coefficient is a major difficulty.

在基准电压源的设计中，如何实现高精度、低温度系数是一大难点。

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This paper analyzed the major hazards and accident risks. The risk index and power coefficient were presented and referenced value and formula were defined.

分析了煤矿重大危险源与事故风险，提出了煤矿危险性概率指数和风险权系数，并给定了参考值和计算公式。

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Denmark and two-time champions France won their qualifying groups, but face the prospect of being drawn with two other major nations after being put in Pot 4 due to a low coefficient rating for results over the past few years.

CNN: Spain named top seeds for Euro 2012