rim hole

The effect of surroundings on the color of dental porcelain with various sizes;

周边色对不同面积陶瓷修复体色度学的影响

Thus demonstrated that the peripheral ash discharging is feasible in mountainous area ash storage, its low cost and good effect is .

以河北省唐山市陡河电厂李家峪储灰场为例,利用火力发电厂排出的粉煤灰自身较好的防渗性能,结合储灰库区渗漏途径和渗漏段的分布,沿库区周边分期、分段进行针对性排灰,并根据地下水动态监测结果适时调整,使库区周围地下水环境逐步得到改善,得出周边排灰在山区储灰库防渗中具有可行性,其成本低效果显著值得在山区储灰库的防渗工作中推广。

More and more attention has been paid to heavy metal anomalies in soil in town areas and their surroundings.

这里研究结果发现,城镇周边地区的土壤重金属元素异常,与燃煤(或金属矿石选冶)过程中释放出的"微球粒"物质和黄铁矿、磁铁矿等重矿物具有成因联系,因此为确认此类异常的成因机理提供了证据,对异常的生态效应评价以及预警预测研究具有直接意义。

Based on analyzing the experiences of nature reserve functional zoning from domestic and overseas, it is proposed that the adjacent areas of nature reserve are the areas within the defined distance outside of the nature reserve.

在分析国内外自然保护区功能分区的基础上,提出自然保护区周边地区是"位于保护区边界外一定距离内的区域",实施周边地区管理的理论基础是可持续理论和参与式农村发展理论,实践周边地区管理是以地方政府为主导、各利益相关群体是主体;周边地区管理计划既是一个独立的区域综合发展计划,又是保护区综合管理的重要组成部分。

The regional economic cooperation between the minority areas of China and the neighboring countries is beneficial to both sides.

民族地区与周边国家加强区域经济合作是双赢发展的需要。

The situation in our country is so severe that it is greatly urgent to strengthen the drug-banning co-operation in the western areas with neighboring countries.

就我国毒品犯罪的严峻形势而言 ,加强西部地区与周边国家的禁毒合作已迫在眉睫。