2X-type rotary vane vacuum pump的意思|示意
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2x型旋片真空泵
2X-type rotary vane vacuum pump的网络常见释义
X型旋片式真空泵 2XZ型旋片式真空泵 2XZ--type rotary vane vacuum pump 2X型旋片式真空泵 2X-type rotary vane vacuum pump 45°Y型三通（等径） 45°Y-branches (straight size) ..