A theoretical analysis model of of partial surface texturing mechanical seals was presented.
介绍一种在密封环端面具有微观凹腔和宏观泵送槽的新型机械密封.
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Now that the sheets have gotten their Treasury Department seals, they need their serial numbers.
现在已经得到了他们的床单财政部海豹, 他们需要他们的序列号.
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Penguins also have natural enemies, including wild dogs, sharks, seals and sea lions.
企鹅同样有敌人, 包括海狗, 鲨鱼, 海豹和海狮.
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双方全权代表在本条约上签字盖章, 以昭信守.
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Use care not to score the housing bore when prying out seals and washer.
当拆下油封和垫圈时,要特别小心切勿划伤机座孔.
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The seals were rescued from Rhode Island beaches, where they were stranded last year.
这些海豹去年在罗得岛的海滩搁浅时获救.
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Replaceable hose filter and valve stem seals for field reliability.
可更换软管过滤器和阀门阀杆密封,使得现场应用可靠行更高.
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Their diet consists of seals, fish, seabirds, ducks, rodents and occasionally even reindeers.
它们的主要食物有海豹, 鱼类, 海鸟, 鸭子, 鼠类,偶尔它们还吃驯鹿.
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Polar bears usually subsist on seals, which they hunt from a platform of sea ice.
北极熊通常在浮冰上抓捕海豹作为食物.
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确保每个安全认证标志能够在购物车或是检测进程中清晰地显示出来.
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该封条适用集装箱. 货柜与物流 、 短途运输 、 油罐车运输等.
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卖肉的拿了一包用玻璃纸包着的切成片的腌猪肉,用棕色纸包上粘好,标上价钱。
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采购产品电传视讯设备,化妆品, 矽树脂, 化妆品, 电讯产品.
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Mechanical seals are standard Type 21 design for low replacement cost.
标准“21型”机械式密封,有利于降低更换成本.
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