heated to temperature in the range 500-700℃
cool the mixture to room temperature
at a temperature of 90-85℃
roll into sheet at between 120-150℃
under high pressure
above/about
tertiary>secondary>primary
其中>:greater than <:less than
=:equal/be equal to
约等于:A approximately equal to B
程度的表达
相等强度:
“the same as ”【用于名词】
"so.+adv./adj ..as"【用于动词//否定句】/"as...as."[用于肯定句]
比例强度----引入比例用 in proportion as (to) 按....比例;依....比例而变
combustion n.燃烧室 cycloalkanes 环烷烃 ring formation 环的生成