This is the second book in a series of five vocabulary practice books, which are graded in difficulty for elementary to advanced students of English. Each book contains 50 exercises, which test and te
Sintering is a method for manufacturing components from ceramic or metal powders by heating the powder until the particles adhere to form the component required. The resulting products are characteriz
Piezoelectric materials produce electric charges on their surfaces as a consequence of applying mechanical stress. They are used in the fabrication of a growing range of devices such as transducers (u
