inner Insulation of External Wall
second level inner macro call
third level inner-macro-call
basic impulse insulation level
external insulation level
insulation insulation space
insulation level monitoring device
over-voltage and insulation level
reduced insulation level
inner electron (=inner-shell electron)
inner vertical bristles inner vertical bristle
4-level frequency modulation (4-level FM)
bi-level programming model with two lower level models
coupling mechanism between upper level and low level jet
coupling of high level jet and Low level jet