secondary line

短语词组

短语

• Secondary compartment line 区划副线
• Secondary Trunk Line 二干
• secondary geodesic line 二次测地线
• parking secondary brake line 停放紧急制动管路
• secondary sensitivity line 次灵敏线
• secondary spectral line 二级光谱线
• Secondary electron line scanning 二次电子线扫描
• secondary ground line 副基线
• secondary power line carrier 低压电力线载波
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