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Chinese National Standards
中華民國國家標準
- Taiwan 台灣 -
　

"Trapezoid " CNS Standards List

| Indoor air | Method Test | Railway applications | Emergency lighting | Machine Reamers | Method Test | Plastics − | Photovoltaic devices |
B-Mechanical Engineering
CNS 4221    1978 Edition
Metric Trapezoidal Screw Thread (Limits for Internal Screw Threads From 8mm to 100mm)
梯形螺紋(標稱直徑8 mm至100 mm的內螺紋限界尺寸)

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