mathview not properly rendered when with non-english words

[catsky]

e.g. ( \frac {W_{有} } {W_{总}} )=( \frac {Gh} {Fs} )=( \frac G {nF} )

as above, on this android mathview, it will fail to render. but if I use the MathJax javascript, it would render properly on webpage. see pic

is there any setting need to be done on mathview to support non-english words? thanks.