百度翻译我试过了，很不通顺。最好是一句英文一句中文，身为中国人，我英文太差了。
The order of input is relevant in the subtraction expression.
If both input values are integer, the output values will be integer; otherwise, the output will be floating point.
The output from the ArcObjects method is a raster object.
A number cannot be used as input to the ArcObjects method. If a constant number must be passed to the method, create a constant raster using IRasterMakerOp::MakeConstant, then pass the results to the method.
The order of input is relevant in the subtraction expression.
If both input values are integers, the output values will be integers; otherwise, the output will be a floating-point value.
A number can be used as an input; however, the cell size and extent must first be set in the environment.
The following environment settings affect this tool:
General： Current Workspace, Scratch Workspace, Output Coordinate system, Output Extent, Snap Raster.
Raster Analysis：Cell size, Mask.
Raster Storage： See the Raster Storage settings for the particular output raster format selected.
The order of input is relevant in the subtraction expression.
If both input values are integer, the output values will be integer; otherwise, the output will be floating point.
The output from the ArcObjects method is a raster object.
A number cannot be used as input to the ArcObjects method. If a constant number must be passed to the method, create a constant raster using IRasterMakerOp::MakeConstant, then pass the results to the method.
The order of input is relevant in the subtraction expression.
If both input values are integers, the output values will be integers; otherwise, the output will be a floating-point value.
A number can be used as an input; however, the cell size and extent must first be set in the environment.
The following environment settings affect this tool:
General： Current Workspace, Scratch Workspace, Output Coordinate system, Output Extent, Snap Raster.
Raster Analysis：Cell size, Mask.
Raster Storage： See the Raster Storage settings for the particular output raster format selected.
