单晶硅和多晶硅体太阳能电池成本居高不下，非晶硅和非晶硅薄膜太阳能电池又有光致衰退效应的困扰。

The cost of crystalline silicon and polycrystalline silicon solar cell is high steadily, amorphous silicon and amorphous silicon thin film solar cell has "optical-induced degradation".

youdao

这两者产生出负0.3%的净效应：一个毋庸置疑的绊脚石，但不足以形成衰退。

That yields a net effect of minus 0.3 points: a drag, to be sure, but not enough to generate recession.

youdao

在衰退中，上述第二种效应似乎表现得更为明显，实际上，在衰退最为严重的2008 - 2009年，这种关联最为紧密。

This second effect seems to have been greater during the recession, and in fact the correlation is strongest during its worst period, 2008-09.

youdao