2) blackening of the copper conductor
铜线发黑
3) exploitation of copper deposits.
开发铜矿
4) Brass Blackening
黄铜发黑
5) Copper mineral resources exploitation
铜资源开发
6) Tong Chuan Economic and Technology Open Economic Zone
铜川开发区
1.
This article takes the Tong Chuan Economic and Technology Open Economic Zone as an example, on the basis of comprehensive analyzing on the Open Economic Zone\'s land utilizing, expounding the time changing and space distributed features of different using land price and land intensive utilizing from time and space with the method of quality and quantity.
本文以铜川经济技术开发区为例,在对开发区土地利用状况进行综合分析的基础上,定性和定量相结合,从时间和空间两个层面上对铜川开发区不同用途地价与土地集约利用进行详细阐述。
补充资料：铜发熕
Image:117830487511803.jpg
铜发熕
铜发熕是明代的大型火炮，创制于嘉庆年间。重五百斤，发射的弹丸重四斤。由于震动太大，虽军战船不能直接装载，要用专用的木筏装载发射。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。