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窮屈 ichi1 news1 nf22; 硬い ichi1 news2 nf33; 固い ichi1 news2 nf46; 堅い ichi1 news2 nf29; 緊い esp. 固い & 堅い for wood, 硬い for metal and stone ik |
rigide : 20 phrases in 9 subjects |
Antennas and waveguides | 1 |
Electric motors | 1 |
Electric traction | 3 |
Electrical engineering | 2 |
Electricity generation | 1 |
General | 1 |
Isolation | 5 |
Printed circuit boards | 4 |
Rail transport | 2 |