Ingersoll Rand remains a 'hold' due to high valuation, modest revenue growth, pressured margins, and reliance on acquisitions ...

It is a challenging work to develop the direct current (DC) air circuit breaker (ACB) with the rated voltage of 1500 V, which has a compact size. There are two main switching performances in the DC ...

The internal structure of casting billets directly affects the performance of steel products, but in practice, it cannot be detected online. Macro images (low-magnification snapshots of the casting ...