被磨损

In fishing,the sliding cone blocks enter the fish cavity easily acted by a guide shoe and a guide cone,slide downward by its own weight,produce relative displacement to the guide rail slope,and the radial distance between its tooth face and the spear rod increases until it touches the inner wall of the fish cavity; while lifting the drilling string,the guide rail slope on the spear rod forces the sliding cone blocks to bite the inner wall of the tubing fished.

打捞时在引鞋和导锥的作用下滑牙块能够顺利进入鱼腔并依靠自重下滑，沿导轨外伸直至其齿面与鱼腔内壁接触；随后上提钻柱，矛杆上的导轨斜面迫使滑牙块咬紧被打捞油管内壁，当油管严重偏磨使一对滑牙块卡在磨穿位置时，另一对能有效卡在未磨损部位，同时外筒限制了油管外胀变形。

When not cleaning, the cleaning system using hydraulic lift system to reduce vehicle running resistance, while protecting the brush is not unnecessary wear and tear.

在不进行清扫时，利用液压系统将清洁系统抬升，以减少车子运行时的阻力，同时保护毛刷不被无谓磨损。

Senior Girls: Blouse - Short/long sleeved cornflower blue check Skirt - Dark navy box pleat below knee length Trousers - Dark navy dress Jersey - Dark navy rib Vest - Dark navy rib Blazer - Dark navy pin stripe · Extras: Socks - Dark navy Tights - Black Sandals - Black/brown/blue leather ·Extras: Jacket - Regulation navy Scarf - Regulation school blue and gold striped No other scarves are to be worn Uniform Regulations · T Shirts or thermals worn under uniform MUST NOT be visible · Regulation School cap ONLY – not to be worn in classrooms · Hair MUST be neat and clean – neither extreme styles nor exotic colours are acceptable · Hair accessories must be navy or black · Jewellery is not permitted with the exception of ONE plain gold or silver stud (NOT hoops in each earlobe.

高中女孩：短上衣-短或长袖子的有矢车菊蓝检查裙子--在膝盖长度裤子-以下黑暗海军箱形褶裥-黑暗海军服装泽西岛--Dark海军肋骨背心--黑暗海军肋骨燃烧体-黑暗海军大头针条纹·额外的费用(女孩：袜子--黑暗海军紧身衣--黑凉鞋--布莱克//棕色/蓝皮革·Extras(所有的一切：短上衣--规则海军围巾--给划条纹规则学校蓝色和金子禁止另一是磨损scarves公亩一致规则·所穿的在一致必要的&非&是可见·下面T衬衫或者上升的热气流；不要在教室·中所穿的规则学校帽子仅有？C；头发一定是整洁和干净？C无论极端还是外来的都不款式彩色是可接受·头发附件一定是海军金色·珠宝未被除了一在每一耳垂中清楚金子或者银饰钉

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。