- waterballast
- n.镇船水载,水衡重,水压载
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
waterballast
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Glasflügel H-301 — NOTOC The Glasflügel H 301 Libelle is an early composite 15 metre Class single seat sailplane produced by Glasflügel from 1964 to 1969.DevelopmentIn 1964 the H 301 Libelle ( Dragonfly ) received the first German and first U.S. Type Certificate… … Wikipedia
