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