手风琴室内乐演奏中的音色变化是通过变音器的选用、风箱及触键的紧密配合来完成的。
The various timbres in the accordion chamber music playing are completed by the selection of register and the close coordination of bellows and keys touching.
细胞壁是两种矿物质的主要结合部位，并通过一定的化学键紧密结合。
The cell wall is mainly combine part of two kinds of mineral materialses, and close combine with pass the certain chemistry key.
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