A new waterproof and thermal insulation paint made of materials such as elastic emulsion,hollow glass bead,diatomite,infrared reflection agent and amianthus is introduced.
He soon found that mixing nitroglycerine with kieselguhr would turn the liquid into a paste which could be shaped into rods of a size and form suitable for insertion into drilling holes.
土排
，排
锥体部分无残留。
Science and technology 
液、空心玻璃微珠、
。
用了
意。
