TOKYO —Something many visitors to Japan notice is the abundance of overhead powerlines. Whether youre in the suburbs, city center, or even rural communities,its rare to look up at the sky or towards the horizon without the view being criss crossed by thick, black cables.东京——来日本旅游的游客可能会注意到日本天空中有大量的高压电线。不管是在郊区,还是在市中心,甚至在农村地区,当你抬头看天空或者遥望远处时总会看到这些厚黑的电线。 在其他国家都把电线藏到地底的情况下,为什么日本的地表上面会有这么多的电网呢?简单的答案就是成本,但据说把电线绑在电线杆上还有其他的好处,而且日本还没达成共识到底那种方式更好。Starting with the budgetary side of things, subterranean systems are a lot more expensive. With the added expenses of digging the ditches and properly installing thelines and conduits, the cost can balloon to ten times that of a comparablysized network of above-ground poles.先从预算角度来说,将电网埋藏在地下成本更高。首先要挖沟,然后将电线和导线埋在里面,所以其成本甚至可以是地表电网成本的十倍。 |