With the increase of temperature, the（ ）of an NTC ceramic decreases.
A material consists of particles with a certain composition, and can be（ ）into products having shapes and colors.
The chemicals react ( ) a high reacting rate.
单词 upcycling 意思是 ( )。
“透明性” 与 “氧化硅” 两个词表述都正确的是 ( )。
表述 “最新工艺” 的词汇应是 ( )。
“green ceramic” 的意思是 ( )。
合成词 limestone 的意思是 ( )。
PTC ceramics means ( ) ceramics.
The（ ）effect of PTC ceramics means that the structure consists of semiconducting grains and insulating grain boundaries.
“aging of polymers” 指的是 ( )。