... 针形流量测定闸阀：needle measuring valve 针隙：needle gap 针头站：pin drill ...
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短语
针隙避雷器
needle gap arrester
针尖花隙
needle gap
针板间隙
point plane gap
针阀间隙
needle clearance
针尖间隙
needle-point gap
针尖火花隙
needle point spark gap
针尖电花隙
needle-point spark gap
角隙避雷针
horn gap arrester
可调间隙滚针轴承
adjustable needle roller bearing
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