Friction stir welding （FSW）, invented at The Welding Institute, UK, in 1991, is a highly efficient solid-state joining technique, involving frictional and adiabatic heating, plastic deformation and solid-state diffu...Friction stir welding （FSW）, invented at The Welding Institute, UK, in 1991, is a highly efficient solid-state joining technique, involving frictional and adiabatic heating, plastic deformation and solid-state diffusion. It has been widely accepted as a ＂green＂ technology due to its energy efficiency and environment friendliness, and is considered the most significant development in the field of material joining over the past two decades. Friction stir processing （FSP） was later developed based on the basic principles of FSW. FSP has proven to be an effective and versatile metalworking technique for modifying and fabricating metallic materials.展开更多
W25 was a gamma-irradiation induced albinorice mutant line, which only expressed in thespecial temperatures (see figure). At 30 Cand 35 C, the seedling leaves of W25 showedgreenish or normal green, but they exhibiteda...W25 was a gamma-irradiation induced albinorice mutant line, which only expressed in thespecial temperatures (see figure). At 30 Cand 35 C, the seedling leaves of W25 showedgreenish or normal green, but they exhibitedalbino at 25℃, which could be greenish afterthe fourth leaf extension and recovered to be展开更多
文摘Friction stir welding （FSW）, invented at The Welding Institute, UK, in 1991, is a highly efficient solid-state joining technique, involving frictional and adiabatic heating, plastic deformation and solid-state diffusion. It has been widely accepted as a ＂green＂ technology due to its energy efficiency and environment friendliness, and is considered the most significant development in the field of material joining over the past two decades. Friction stir processing （FSP） was later developed based on the basic principles of FSW. FSP has proven to be an effective and versatile metalworking technique for modifying and fabricating metallic materials.
文摘W25 was a gamma-irradiation induced albinorice mutant line, which only expressed in thespecial temperatures (see figure). At 30 Cand 35 C, the seedling leaves of W25 showedgreenish or normal green, but they exhibitedalbino at 25℃, which could be greenish afterthe fourth leaf extension and recovered to be
