少妇人妻互换不带套,忘记穿内裤被同桌摸到高潮app,亚洲色精品aⅴ一区区三区,国产亚洲精品久久久久久久久久久动漫

Mechanical?
PRODUCT CATEGORIES
Static Friction Coefficient Tester WJM-I
  • Description
  • Video

    1) Function: for detecting the coefficient of static friction of enamelled round wire with diameter of 0.05-1.6mm;

    2) Comply with the latest IEC, GB, JIS and NEMA standards;

    3) Slanting speed of the slide plate: 1±0.2°/s;

    4) Slanting angle of the slide plate: 0-30°;

    5) Deviation of display±0.001;

    6) Conform to the standard slider and bring a tensioning device.