On grammatical class:

cei
selbri variable assignment; assigns broda series pro-bridi to a selbri.

In definition:

cmavrcei
x1 is the selma'o "CEI".
jvisocei
x1 is the IEC (International Electrotechnical Commission; French: Commission électrotechnique internationale, CEI) designation/result/standard/code for topic x2 applied to specific case/individual/group/electrotechnology/thing x3 according to rule/IEC specification x4 published by/according to mandating organization x5 (default: IEC)
jvisrcei
x1 is the IEC (International Electrotechnical Commission; French: Commission électrotechnique internationale, CEI) designation/result/standard/code for topic x2 applied to specific case/individual/group/electrotechnology/thing x3 according to rule/IEC specification x4 published by/according to mandating organization x5 (default: IEC)

In notes:

brika'i
x1 is a pro-bridi representing predicate relationship x2 with relation x3 among arguments x4.
cei'e
define following selbri with sentence or tu'e...tu'u clause
goi'e
assign sentence or tu'e...tu'u group to sumti
taulka
x1 is a part of Lojban text representing rule 'tanru-unit' according to the first edition of the book 'The Complete Lojban Language'.