主要是竹林密度过大，林内通风透光不良所致。

The main cause is that density of bamboo forests is too big and ventilation and light is not so good.

youdao

不可否认这个地区的人口密度过大使得拆除工作风险很大。

You can't deny that the density of the area would make a demolition too risky.

youdao

其次，安稳和均匀的导电功能避免电流密度过大，使底衬过热，出现热点而过早损坏。

Secondly, stable and uniform conductive function to avoid the current density is too large, so that the bottom of the hot, hot spots and premature damage.

youdao