况且，有些步骤彼此并列同时进行。
Further, some of the steps may parallel one another and occur simultaneously.
然后将它们彼此并列，好使它们可以被互相比拟。
Then line them parallel to one another so they can be compared with each other.
导光结构中有一对彼此并列且沿一接合面互相接合的半椭球体。
A pair of semiellipsoids which are mutually arranged in parallel and are mutually spliced along a junction surface is included in the light guide structure.
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