Manufactured by casting polyurethane, main seal ring used in expansion ring testing device for pipeline was designed.

采用浇注型聚氨酯材料，设计了一种管道用胀环试样试验台主密封圈。

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The reliable sealing device design, the main seal USES the international famous factory production the high quality seal, the sealing property is good.

可靠密封装置设计，主要密封件采用著名厂家生产的优质密封件，密封性能好。

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The main purpose of attaining the skin a seal to prevent loss of moisture or sebum, while the other is to get rest for tired skin.

敷脸最主要的目的在于一个将皮肤密封，以防止水分或皮脂的流失，另一方而则是为了让疲劳的皮肤获得休息。

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Fawaz Abu-Khadijeh, a cabdriver who is a regular at the mosque, recalls Sheik Safwat asking him for curtains to further seal off the women's prayer area, then separated from the main hall by an eight-foot wall.

CENTERFORSECURITYPOLICY: San Francisco Islamofacists

Seal hunt co-ordinator Roger Simon, while acknowledging it is not a main source of revenue for people in Atlantic Canada, still characterises the commercial hunt as important for fishing communities and for the aboriginal Inuit people further north.

BBC: NEWS | Americas | Canada's seal hunt stokes passion