periodical duty
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- oil window
- cargo lamp
- British Insurance Group
- general speed
- quotation
- major
- Period of Container Leasing
- Lunar probe
- general delivery
- running out system
- rise and fall
- broad on the starboard quarter
- quality conformance inspection
- topgallant
- lighting and ventilating shaft
- master link,master rod; main connecting rod,
- triple treat sonar
- damping effect
- assigned
- principal traffic route