求翻译：这些波浪发电装置各有优缺点，但有一个共同的问题是波浪能转换成电能的中间环节多，效率低，电力输出波动性大，这也是影响波浪发电大规模开发利用的主要原因之一。把分散的、低密度的、不稳定的波浪能吸收起来，集中、经济、高效地转化为有用的电能，装置及其构筑物能承受灾害性海洋气候的破坏，实现安全运行，是当今波浪能开发的难题和方向。是什么意思？

The wave power devices have advantages and disadvantages, but there is a common problem is that the wave energy into electrical energy in the middle part of many low efficiency, large power output volatility, which is affecting large-scale wave power development and utilization of one of the main. S

These wave power device there are advantages and disadvantages to both, but there was a common problem is that wave energy into electricity than the middle link, and the efficiency is low, the power output volatility of waves, this is also affecting power generation using one of the main causes of l

These wave electric power facility has the good and bad points respectively, but has a common problem is the wave can transform the electrical energy the middle link to be many, the efficiency is low, the power output undulatory property is big, this also is affects the wave to generate electricity

The wave power device has advantages and disadvantages, but there is a common problem is the Middle link of wave energy conversion into electricity, low efficiency, power output volatility, which is one of the major reasons affecting the massive exploitation of wave power. , Low density dispersed, i

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