pP๊NCYyI๐ฎF2Ep๑Ep๊z
ฟฒซํ[h
ก172โฺ ๑สก
sณ๐I
ณ@๐Fconcept
@ิF598b
ณ๐F34โ
ๆ173โฺ
@B
manufacture
machine
contribution
experiment
transportation
j [ึ
ฤงํ