The Merchant Circle survey is based on a random sample of 8, 456 small business business owners in the United States.
商人圈（Merchant Circle）的调查是基于美国8456名小企业主这一随机样本进行的。
The technique of microwave dissolution is being thought highly of by people in the chemical circle for its features such as time saving, less sample usage and complete dissolution.
微波消解技术以其耗时短、样品用量少、消解完全等特点而受到化学界人士的高度重视。
Influence of the noise in sample data the on the locating of circle centre is analyzed in detail, and simulated experiments are implemented. Results of exper…
实验结果表明，在光条圆弧特征数据所占整圆比例偏小的条件下，半径约束最小二乘圆拟合方法可以有效地提高圆中心定位精度。
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