Author Comment Last activity Moderation
congminhqt "fix: I upload a lot, I need to Tags: Calibrate Calibration enter. Thank you I have repaired the error " | Read more » over 8 years ago
congminhqt "I began to learn about the spectrum, my english is poor, I come from Vietnam. Can I upload the image too much. but I do not know how to fix it. Ple..." | Read more » over 8 years ago