e/Chen-2 bottom mine

Information
has gloss	eng: Sinking-2 (沉-2, Chen-2) bottom mine was the first indigenously designed Chinese naval mine that can adopt a various range of fuses, such as acoustic, contact, infrasonic, ultrasonic and magnetic fuses. The project was jointly developed by Fengxi Machinery Factory (汾西机器厂) and the 710th Research Institute in 1972, and it was mainly used for coastal regions. The mine was accepted into service in 1975.
lexicalization	eng: Chen-2 bottom mine
instance of	e/Naval mine