He says they actually use dental floss to slowly saw away at the metal, adding tooth powder to increase the friction.
但是犯人们总能找到办法弄到。现在他们用牙线慢慢钜金属，抹上牙粉增加摩擦力。
The powder product wear resistance, corrosion resistance, good sliding friction.
该粉末产品耐磨性，耐蚀，耐滑动摩擦性好。
The principle part of composition in this research was the composition of FMPS iron based powder metallurgical friction material.
研究采用的铁基粉末冶金摩阻材料主体配方是FMPS型铁基粉末冶金摩阻材料基础配方。
This dusting powder is very gentle and helps keep a barrier between her sensitive skin and any friction arising from her pamper, clothes or simply her rolling around on her stomach while sleeping.
这款粉很温和，可以在她敏感的皮肤表面和衣服尿布间形成一层隔离，睡着了翻身也很方便。
The tin, lead, zinc in bronze powder have a good friction reducing effect.
青铜粉中的锡、铅、锌具有良好的减磨效果。
Main clutch: normally opened, multi-plate, powder metallurgy friction plate and hydraulic booster control.
离合器为常开式、多片湿式粉末冶金摩擦片、液压助力操纵。
PTFE-bronze powder-steel is a widely used three-layer self-lubricating bearing material with good anti-friction and anti-wear.
聚四氟乙烯（PTFE）-铜粉-钢背复合材料是一种广泛应用的三层结构自润滑轴承材料，具有良好的减摩耐磨性能。
PTFE-bronze powder-steel is a widely used three-layer self-lubricating bearing material with good anti-friction and anti-wear.
聚四氟乙烯（PTFE）-铜粉-钢背复合材料是一种广泛应用的三层结构自润滑轴承材料，具有良好的减摩耐磨性能。
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