静せい止し土ど圧あつ係けい数すうMeaningsNoun1. coefficient of earth pressure at restKanji used静quiet止stop土earth圧pressure係be involved with数numberComposed of静せい止しstillness; rest; being stationary; standing still; coming to a standstillNoun土どSaturday; earth; dirt; soil; land; lands; ground; earth (third of the five elements)Noun圧あつpressure; forceNoun係けい数すうcoefficient; factor; proportional constant; modulusNoun