SCIENCE AND TECHNOLOGY ENGLIAH FOR MECHANICAL ENGINEERING Some of the practices which have developed in the hydraulics industry make problem-solving difficult. Among these are the use of feet head of water as a measure of pressure and the use of Saybolt Universal seconds or metric units for viscosity. In this book most such units have been 粘性 converted into their English equivalents. Through personal preference, the author avoids confusion in conversion by putting everything into units of pound-force, Inches and seconds Wherever this might conflict with established practice such as using units of Newts for kinematics viscosity-conversion formulae are providedSCIENCE AND TECHNOLOGY ENGLISH FOR MECHANICAL ENGINEERING Some of the practices, which have developed in the hydraulics industry make problem-solving difficult. Among these are the use of feet head of water as a measure of pressure and the use of Saybolt Universal seconds or metric units for viscosity. In this book most such units have been converted into their English equivalents. Through personal preference, the author avoids confusion in conversion by putting everything into units of pound-force, inches and seconds. Wherever this might conflict with established practice such as using units of Newts for kinematics viscosity-conversion formulae are provided. 粘 性