One example of the spacer means is a cylindrical cap made of a ceramic material, the cap being disposed at {HEAD ~ the top} of {TAIL ~ the capsule} and secured thereon 
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One example of the spacer means is a cylindrical cap made of a ceramic material , the cap being disposed at { HEAD ~ the top } of { TAIL ~ the capsule } and secured thereon
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH