Steel global style design. Using F type screw thread connection.

钢球式设计, 采用F型螺纹连接方式.

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Using F type screw thread connection.

采用F型螺纹连接方式.

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ZYBW _ F type dry running vacuum pressure combined pump is the derivative product of ZYBW _ E type pump.

镇江气泵ZYBW_F型干式旋片真空压力复合气泵是ZYBW_E型气泵派生产品.

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The spectral type was similar to that of a giant of F type during this period.

整个观测期间该星光谱型基本与F型巨星相近.

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