total low-temperature shift  全低变

high pressure and total low temperature CO shift  高压全低变

mid low low temperature shift  中、低、低变换

mid low low temperature shift process  NHD溶剂; 中低低变换工艺

middle low low temperature” shift process  中低低变换工艺

middle-low-low temperature shift  中低低

mid-low-low temperature shift process  中低低变换工艺

all low temperature shift process  全低变工艺

All low-temperature shift  全低变

anti-sulfur low temperature shift process  耐硫低温变换工艺

CB-5 low temperature shift catalyst  CB-5型低变催化剂

CB-9 low temperature shift catalyst  CB-9低变催化剂

Co-Mo catalyst for low temperature shift  低变钴钼系催化剂

fully low temperature shift  全低变

fully low temperature shift process  全低变工艺; 全低变流程

high-low-low temperature  中低低

high-low-low temperature process  中低低

Low temperature low noise amplifier  低温低噪声放大器

Low temperature low stress working condition  低温低应力工况