In such sodium alloys, in case {HEAD ~ the component} of {TAIL ~ the alloys} is potassium for instance, the content thereof up to about 20by weight may be tolerated 
of
In such sodium alloys , in case { HEAD ~ the component } of { TAIL ~ the alloys } is potassium for instance , the content thereof up to about 20by weight may be tolerated
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH