Special crystals, mirrors, and other techniques also are used to make the light waves and comb teeth as perfectly spaced as possible.

为了使光波和梳齿尽可能的完美，特殊晶体和镜面等其它一些技术也得到了采用。

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For instance, Hall and colleagues developed methods to stabilize lasers and a "self-referencing" technique that ensures the comb teeth are in exactly the right places.

比如，Hall及其同事研究了多种稳定激光的方法，其中一个“自参照”技术可以保证梳齿精确定位。

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When used, the utility model is worn on a head. The comb teeth enter hair. The hair is arranged between the comb teeth and the cap shell. The hair is not pressed. A hair style is maintained.

使用时，将本实用新型戴在头上，梳齿进入头发里，头发处于梳齿和罩壳中间，头发未受压，可保持发型。

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At each new moon, we wondered whether it would ever appear again (were we hoping that it would simply disappear?), and when it did reappear, looking more and more like a comb that had lost its teeth, we averted our eyes with a shudder.

NEWYORKER: The Daughters of the Moon