求翻译：第7，日币债券投资的空间拓展是什么意思？

7, yen bond investment to expand the space

The first 7, yen bond investment expansion of space

7th, Japanese currency bond investment spatial development

7th space expansion of the Japanese yen bonds

Until cost increase and under whom market wither pinch while being double, labor-intensive, resources processing industry, coastal area of Japan, echelon move Mainland to progressively, more factors of production will flow into the marginal rate of returns in higher central and west regions with hig