With the glass tube on the horizont

With the glass tube on the horizontal position as described in the
previous section, the pressure was first established at 20e26 mbar.
The filament voltage was fixed to a maximum of 7.00 V and its
current was read.

ผลลัพธ์ (อังกฤษ) 2:

Glass with the tube on the horizontal position as described in the
previous section, the pressure was First established at 20e26 mbar.
The filament was fixed to a maximum of 7:00 Voltage V and ITS
current was read.