4 shows the mounting of a Thomson card on its pivot, which in common with the pivots of most other compasses is made of brass, tipped with osmium-iridium, which although very hard can be sharply pointed and does not corrode.
SolarWorld solar panels installed with bare-copper grounding lugs can corrode which could result in a faulty ground circuit, posing an electric shock, electrocution or fire hazard
corrode הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד