Add spaces: Thewholestaffwillendeavortoprovidemoreproductsandfull-heartedserviceforourcustomerstoengageintheexpandtideof

Answer: The whole staff will endeavor to provide more products and full-hearted service for our customers to engage in the expand tide of

Add spaces: Esclangonacceptedapostattheuniversityobservatorybutcontinuedtoworkonmathematicaltopicsforhisdoctorate.

Answer: Esclangon accepted a post at the university observatory but continued to work on mathematical topics for his doctorate.

Add spaces: NewLaw,Regulationsandtechnologicaldevelopmentshavenotbeforethistraditionaltechniqueofcommunicationhalted.ByDSCandGMDSSradioequipmentonboardoffersenhancedsecurityandrapidresponseincaseofdistress.

Answer:
New Law, Regulations and technological developments have not before this traditional technique of communication halted. By DSC and GMDSS radio equipment on board offers enhanced security and rapid response in case of distress.