Sexual dysfunction among females is one of the hottest issues facing the medical world today. Female sexual dysfunction or female sexual arousal disorder means that a woman is suffering from low sex drive or low capacity to reach an orgasm d...英国华人论坛
The function of a lubrication medium is:1. To form a film between moving bearing components so that metal to metal contact is prevented.2. To reduce friction and eliminate wear3. To protect against corrosion4. To seal against impurities like...英国华人论坛
A lubricating grease is usually a mixture of 85 to 90 percent mineral oil or synthetic oil together with a thickener. In a majority of all greases, the thickener is a metallic soap. One example is lithium stearate for lithium soap.The functi...英国华人论坛