- 號(hào)志機(jī)械
- distant signal mechanism: 預(yù)告信號(hào)機(jī)構(gòu)
- electric motor signal mechanism: 電動(dòng)臂板信號(hào)機(jī)構(gòu)
- modular type signal mechanism: 組合式信號(hào)機(jī)構(gòu)
- searchlight signal mechanism: 探照式信號(hào)機(jī)構(gòu)
- signal transduction mechanism: 細(xì)胞信號(hào)轉(zhuǎn)導(dǎo)機(jī)制
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