The dragon series was aired over 130 tv stations and the book of the same title became a best seller for the period 后来我在1973年回祖国观光，其感觉更加强烈。同时我也感到东西方存有甚深的误解和歧见，有待弥缝。
2.
Since wedgeplug valves do not require seal lubricants , they are suitable for such services as liquid and gaseous oxygen and nitrogen , food products , refined products , and various other chemicals where the presence of greases used for plug seal lubricants would contaminate the products and be harmful 由于楔塞阀不需要密封润滑，因此它们是用于下列应用，液态和气态氧和氮，食品，精炼石油产品，以及各种其他采用阀塞弥缝润滑油会污染产品和造成损坏的化工产品。
