Hi，
用postForm{RCurl}提交表单，关于如下Adduct Type这个多选框里的多项选择怎么设置？
http://www.hmdb.ca/spectra/ms/search


utf8=%E2%9C%93&authenticity_token=MxNom%2FamQSYnUxDcYTPC%2BEATe9dJFjcCoS65Fenu56rzQqhY6WzsET52TB0Sm6AAD6XESAf7zGLRcCexDK9Sig%3D%3D&query_masses=aaa&ms_search_ion_mode=positive&adduct_type%5B%5D=M%2BH&tolerance=1000&tolerance_units=Da&commit=Search

这个表单post的提交内容
utf8:✓
authenticity_token:MxNom/amQSYnUxDcYTPC+EATe9dJFjcCoS65Fenu56rzQqhY6WzsET52TB0Sm6AAD6XESAf7zGLRcCexDK9Sig==
query_masses:aaa
ms_search_ion_mode:positive
adduct_type[]:M+H
tolerance:1000
tolerance_units:Da
commit:Search