The islands consist of oyster reefs covered with a thin veneer of black mud.

We found a pilot luckily who guided us through the dangerous reefs.

我们很幸运地找到一位领航员,他带我们通过了危险的暗礁区.

The pilot guided us through the dangerous reefs.

这位引航员引导我们通过了危险的暗礁区.

We had shaken out our reefs.

我们把帆全部张开.

Under the seabed there are many submerged reefs.

海底下有许多暗礁.

Experimental results show that POB reduces the friction coefficient and increases the wear resistance of PTFE.

结果表明,添加POB降低 了PTFE的摩擦系数,提高了PTFE的耐磨性.

However, PTFE has some properties that can make it a poor choice for a washer material.

但是, PTFE有一些使它成为垫圈材料的较差选择的性质.

The inherence vices of PTFE limit it's application as anti-corrosion coating in the engineering field.

聚四氟乙烯(PTFE)的一些固有缺陷,限制了其作为 防腐蚀 涂层在化工领域中的应用.

It is installed as one solid piece of PTFE and the internal geometrical shape is machined.

阀门内部安装了一体化紧密的PTFE,而且它内部的几何形状是经过加工过的.

The performance of Polytetrafluoroethylene ( PTFE ) is good and is applied intensively on sealing material at present.

聚四氟乙烯 ( PTFE ) 性能优良,是目前广泛应用的密封材料.

All valves are available with optional PTFE seat rings.

所有闸阀都可以配置备选的聚四氟乙烯(PTFE)阀座环.

The technology of preparing cohesive poly ( tetrafluoroethylene ) ( PTFE ) board and regarding adhesion property were discussed.

研究了可粘性聚四氟乙烯(PTFE ) 板材的制备工艺及其粘合性能.

Polyphenylene sulfide ( PPS ) composites filled with Polytetrafluoroethylene ( PTFE ) and kaolin nanoparticles were prepared by compression molding.

通过模压的方法制备了聚四氟乙烯 ( PTFE ) 和纳米高岭土填充的聚苯硫醚 ( PPS ) 复合材料.

The chemical and physical characteristics and applications of polytetrafluoroethylene ( PTFE ) fiber are introduced.

介绍了聚四氟乙烯 ( PTFE ) 的化学、物理等特性及其应用.

PTFE-bronze powder-steel is a widely used three layer self-lubricating bearing material with good anti-friction and anti-wear.

聚四氟乙烯(PTFE) - 铜粉 - 钢背复合材料是一种广泛应用的三层结构自润滑轴承材料,具有良好的减摩耐磨性能.

The ability of arc ablation resistance of PTFE composites significantly improved with the addition of fillers.

添加填料大幅度的改善了复合PTFE的耐电弧烧蚀能力.

Chapter 7 makes an analysis of the regulation and self-discipline of industrial investment fund of China.

第七章是关于对产业投资基金监管和 自律 的分析,对监管的原则、宽度和方式提出了作者的见解.

An autonomous person has a free will to realize a valuable and meaningful life.

自律的人才有自由的意志去实现有价值,有意义的人生.

Energetic and self-discipline working attitude are must.

积极主动及 自律 的工作态度.

There is very little sense of self-discipline at this stage.

于此阶段,少有 自律 的观念.

If you aren't aware your behavior is undisciplined, how will you know to act otherwise?

如果你都不知道你的行为是不自律的, 你如何能够让自己自律 呢 ?