VIBRATO by NSR的首款音箱产品Swing书架式音箱诞生于2016年,一一经推出便深受玩家们的欢迎,随后推出S系列大型的监听扬声器产品,但是对于家居环境较小的玩家来说还是望而却步的,因此很多玩家建议文杰工作室推出能够在一般家庭环境中使...VIBRATO by NSR的首款音箱产品Swing书架式音箱诞生于2016年,一一经推出便深受玩家们的欢迎,随后推出S系列大型的监听扬声器产品,但是对于家居环境较小的玩家来说还是望而却步的,因此很多玩家建议文杰工作室推出能够在一般家庭环境中使用的落地式音箱。经过长达两年的研发,Sonata奏鸣曲落地音箱终于和发烧友见面了。展开更多
The development and utilization of low-grade polymetallic deposits with strategic mineral resources is one of the important measures to alleviate the current high dependence on strategic mineral resources in China. Ho...The development and utilization of low-grade polymetallic deposits with strategic mineral resources is one of the important measures to alleviate the current high dependence on strategic mineral resources in China. However, domestic mining enterprises and most mining consulting and design institutes usually use general industrial indicators to carry out reserve estimation and technical and economic feasibility studies on low-grade polymetallic deposits, which cannot truly reflect the economic value of such deposits. The article expounds on the definitions of net return value (NSR) and on-site total maintenance cost (AISC) of common ore smelters in the evaluation of overseas mineral resources. Taking a low-grade polymetallic copper-molybdenum mine in Guangdong Province as an example, comparing the research results showed the NSR-AISC method and the general industrial index method in low-grade polymetallic deposit. There are huge differences in the results of reserve estimation;through the further introduction of Taylor’s formula and the research results on the relationship between investment intensity and production scale, a more reasonable mine life and investment scale are recommended, and a more in-depth comparative study has been carried out in the dimension of technical and economic indicators. Based on the comparative study of the above two methods in reserve estimation and the evaluation results of technical and economic indicators, the author believes that the NSR-AISC method can better reflect the true value of low-grade polymetallic ore projects, and should be popularized and applied in resource evaluation and development practice. This article further describes the application status of the NSR-AISC method for reserve estimation and the evaluation of technical economic indicators, and suggests the main points that should be paid attention to in the use of the NSR-AISC method.展开更多
2016年5月19日,美国种猪登记协会（National Swine Registry,NSR）和美佳育种集团（America’s Best Genetics,ABG）乘着第14届中国畜牧业博览会在沈阳隆重召开的大好时机,举办了海外（中国区）新成员授牌仪式（图1、2）。来自中国最美...2016年5月19日,美国种猪登记协会（National Swine Registry,NSR）和美佳育种集团（America’s Best Genetics,ABG）乘着第14届中国畜牧业博览会在沈阳隆重召开的大好时机,举办了海外（中国区）新成员授牌仪式（图1、2）。来自中国最美丽县——浙江省桐庐县的浙江沃德威先种猪有限公司（以下简称＂沃德威先＂）以及广东省汕头市的广东德兴种养实业有限公司，有幸成为中国大陆地区继上海祥欣和湖南唐人神之后能够实现与美国种猪同步育种的第二批新成员。展开更多
文摘VIBRATO by NSR的首款音箱产品Swing书架式音箱诞生于2016年,一一经推出便深受玩家们的欢迎,随后推出S系列大型的监听扬声器产品,但是对于家居环境较小的玩家来说还是望而却步的,因此很多玩家建议文杰工作室推出能够在一般家庭环境中使用的落地式音箱。经过长达两年的研发,Sonata奏鸣曲落地音箱终于和发烧友见面了。
文摘The development and utilization of low-grade polymetallic deposits with strategic mineral resources is one of the important measures to alleviate the current high dependence on strategic mineral resources in China. However, domestic mining enterprises and most mining consulting and design institutes usually use general industrial indicators to carry out reserve estimation and technical and economic feasibility studies on low-grade polymetallic deposits, which cannot truly reflect the economic value of such deposits. The article expounds on the definitions of net return value (NSR) and on-site total maintenance cost (AISC) of common ore smelters in the evaluation of overseas mineral resources. Taking a low-grade polymetallic copper-molybdenum mine in Guangdong Province as an example, comparing the research results showed the NSR-AISC method and the general industrial index method in low-grade polymetallic deposit. There are huge differences in the results of reserve estimation;through the further introduction of Taylor’s formula and the research results on the relationship between investment intensity and production scale, a more reasonable mine life and investment scale are recommended, and a more in-depth comparative study has been carried out in the dimension of technical and economic indicators. Based on the comparative study of the above two methods in reserve estimation and the evaluation results of technical and economic indicators, the author believes that the NSR-AISC method can better reflect the true value of low-grade polymetallic ore projects, and should be popularized and applied in resource evaluation and development practice. This article further describes the application status of the NSR-AISC method for reserve estimation and the evaluation of technical economic indicators, and suggests the main points that should be paid attention to in the use of the NSR-AISC method.
文摘2016年5月19日,美国种猪登记协会（National Swine Registry,NSR）和美佳育种集团（America’s Best Genetics,ABG）乘着第14届中国畜牧业博览会在沈阳隆重召开的大好时机,举办了海外（中国区）新成员授牌仪式（图1、2）。来自中国最美丽县——浙江省桐庐县的浙江沃德威先种猪有限公司（以下简称＂沃德威先＂）以及广东省汕头市的广东德兴种养实业有限公司，有幸成为中国大陆地区继上海祥欣和湖南唐人神之后能够实现与美国种猪同步育种的第二批新成员。
