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Wood... but the spherical sound box is fashioned out of a whole coconut shell.
木头……不过球形的音盒是整个椰子壳做的。
youdao
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Shell core and cold box coremaking are the main technique at present.
目前制芯工艺主要采用壳芯和冷芯盒制芯技术。
youdao
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Shell core and cold box coremaking are the main technique at present.
目前制芯工艺主要采用壳芯和冷芯盒制芯技术。
youdao