zero-length spring 零长弹簧 ; 零长式弹簧
zero-initial-length spring [地物] 零长弹簧
zero-length spring gravimeter 零长度弹簧式重力仪 ; [地物] 零长弹簧重力仪
metal zero-length spring 金属零长弹簧
spring length 弹簧长度
compressed spring length 压缩弹簧长
effective spring length 有效弹簧长
precompressed spring length 弹簧预压缩量
length transfer pipe and spring 送料管及弹簧长度
Set Spring Rest Length 设置弹簧静止长度
This paper describes the automated Burris metal zero-length spring gravity meter produced by the Zero-Length Spring Corporation, USA, which is an upgrade of LaCoste & Romberg land meters.
美国零长弹簧公司（Zero-Length Spring Corporation）生产的贝尔雷斯（Burris）金属零长弹簧自动重力仪，是拉科斯特-隆贝格（LaCoste&Romberg）陆地重力仪的升级产品和重大改进。
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