ดังนั้นกลุ่มของพวกเราจึงได้ทำการทดส

So a group of us had done the tests of sound traveling through air, but that is not a number of different types of 5 types of rope: rope. Rope, nylon yarn and polyester, used in a tested whether what type of rope is a loud vibration until you most. Using this measure compares a decibel (dB).

So our group has tested the noise travels through a medium. The weather was not kind, but a string of five different types of rope and nylon yarn, polyester yarn used to test any type of rope that will reverberate until the very end. The unit is measured in decibels (dB).

So our group has test meter of sound travels through the medium. That is not the air but various types of rope 5 types including plastic rope nylon rope, thread, yarn.Using comparative measurements as decibel (dB).