关于tf文件grid精度问题，求解释

我的tf文件定义如下：
Technology{
name= ""
dielectric= 3.45e-05
unitTimeName= "ns"
timePrecision= 1000
unitLengthName= "micron"
lengthPrecision= 1000
gridResolution= 10
unitResistanceName= "kohm"
resistancePrecision= 10000000
unitCapacitanceName= "pf"
capacitancePrecision= 10000000
unitInductanceName= "nh"
inductancePrecision= 100
unitPowerName= "pw"
powerPrecision= 1000
unitVoltageName= "v"
voltagePrecision= 1000000
unitCurrentName= "ma"
currentPrecision= 1000
minBaselineTemperature= 25
nomBaselineTemperature= 25
maxBaselineTemperature= 25
请问这个长度精度和grid精度怎么看?分别是多少?

basic grid = 1/Precision = 1/1000 = 0.001
working grid = Resolution * basic grid= 10 * 1/1000 = 0.01