容纳齿轮传动系统的保护性金属外壳；齿轮箱外壳
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容纳齿轮传动系统的保护性金属外壳；齿轮箱外壳；容纳齿轮传动系统的保护性金属外壳；齿轮箱外壳
a protective metal casing that encloses a system of gears
The mechanic removed the gear housing to inspect the gears.
机械师拆下齿轮箱外壳检查齿轮。
容纳齿轮传动系统的保护性金属外壳；齿轮箱外壳
a protective metal casing that encloses a system of gears
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Dictionary facts from AI_SUPPLEMENT.