Oil prices have more than doubled from the low point they hit in the spring, but are still around half the all-time high of nearly $150 a barrel they reached in early summer last year.
比起今春的价格低谷，油价如今已涨了一倍多，但这仍只是去年初夏创纪录的每桶近150美元价格的一半左右。
The corresponding upgrading models were: spring wooden barrel model, strategy coalition model and virtual enterprise model.
对应的提升模式采用弹簧木桶模式、战略联盟模式和虚拟企业模式。
The barrel began to spring a leak .
那个木桶开始破裂泄漏了。
Is the dog slab sided (lack of rib spring) or barrel ribbed (too wide)?
狗肋部是平板的(肋骨弯曲不足)还是桶状肋(太宽)？
The barrel began to spring a leak.
那个木桶开始破裂泄漏了。
Bias-plunger and bias-spring systems are less aggressive, and subsequently deliver a less consistent, yet still acceptable, connection between plunger and barrel.
偏置顶针和偏置弹簧系统的积极性较低，因而在顶杆和套筒之间提供一致性较低但仍可接受的连接。
The invention discloses a magnetic locking mechanism for weapon, comprising driving spring, casing, resistance iron for back seat, magnet, gun action and gun barrel.
本发明公开了一种武器的磁力闭锁机构，它包括：复进簧、机匣、后座阻铁、磁体、枪机和枪管。
The balance spring is connected to the machine body and the exterior barrel through the anti-vibration ring.
吊簧通过减震环与洗衣机箱体及外桶体连接。
The balance spring is connected to the machine body and the exterior barrel through the anti-vibration ring.
吊簧通过减震环与洗衣机箱体及外桶体连接。
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