第三人称复数：fastnesses
名词牢固; 固定; 要塞; 堡垒
名词
1. The rebels have withdrawn to their mountain fastness for the winter.
叛军撤至他们的山寨过冬。
2. We guarantee the fastness of these dyes.
我们担保这些颜料不褪色。
1. 坚牢度：并且当C.I.颜料蓝15:6和C.I.颜料紫23结合作为颜料时,能够形成蓝色像素,该像素具有优越的光谱透射率特性和高鲜艳度(vividness)、亮度和透明度,以及各种最优越的坚牢度(fastness)性质,例如耐光性、
2. 牢度：并且当C.I.颜料蓝15:6和C.I.颜料紫23结合作为颜料时,能够形成蓝色像素,该像素具有优越的光谱透射率特性和高鲜艳度(vividness)、亮度和透明度,以及各种最优越的坚牢度(fastness)性质,例如耐光性、
3. 迅速;牢固;不褪色：fastmultiplier 快速乘法器 | fastness 迅速;牢固;不褪色 | fastnesstoalkali 耐碱度
4. 牢固：fastish 爱快速的 | fastness 牢固 | fastopen 快速打开文件
1. 堡垒;要塞
A fastness is a place, such as a castle, which is considered safe because it is difficult to reach or easy to defend against attack.
e.g. They could have withdrawn into the mountain fastness of Eryri.
他们本可退到山中要塞埃利里去。
1. Tests covered such characteristics as fiber content, color fastness and pH value.
2. fastness的意思
2. The imports were found to lack clear instructions in Chinese, have weak color fastness and abnormal amounts of fiber and formaldehyde.
noun
1. a strongly fortified defensive structure
Synonym: stronghold
2. the quality of being fixed in place as by some firm attachment
Synonym: fixedness fixity fixture secureness
3. a rate (usually rapid) at which something happens
e.g. the project advanced with gratifying speed