58) The material generally used for making Honeycomb core is

59) Low moisture absorption resin system is

60) Most commercial elastomers are filled with _____ to improve their strength or abrasion resistance while maintaining their extensibility.

61) When the fibers are laid parallel to one-another and saturated or impregnated with resin, a _____ is formed.

62) Which are produced from aromatic polyamides by dry-jet wet spinning process.