3.1co-directional(windandwaves)同向（风和浪）actinginthesamedirection作用在同一方向3.2Current水流aflowofwaterpastafixedlocationusuallydescribedintermsofacurrentspeedanddirection经过一个固定位置的水流，通常由流速和流向描述3.3designwave设计波浪deterministicwavewithadefinedheight,periodanddirection,usedforthedesignofanoffshorestructure.Adesignwavemaybeaccompaniedbyarequirementfortheuseofaparticularperiodicwavetheory用于海上结构物的设计，具有指定高度、周期和方向的确定性波浪。设计波浪可能要求采用特定的波浪周期理论3.4designer设计方partyorpartiesresponsibleforthedesignofanoffshorewindturbine负责海上风力发电机组设计的一方或多方3.5environmentalconditions环境条件characteristicsoftheenvironment(wind,waves,seacurrents,waterlevel,seaice,marinegrowth,scourandoverallseabedmovement,etc.)whichmayaffectthewindturbinebehaviour可能影响风力发电机组性能的环境特性（如风、浪、洋流、水位、海冰、海生物、冲刷和整体海床运动等3.6externalconditions(windturbines)外部条件（风力发电机组）factorsaffectingoperationofanoffshorewindturbine,includingtheenvironmentalconditions,theelectricalnetworkconditions,andotherclimaticfactors(temperature,snow,ice,etc.)影响海上风力发电机组运行的因素，包括环境条件、电网条件和其他气候因素（如温度、降雪、结冰等等）3.7extremesignificantwaveheight极端有效波高expectedvalueofthehighestsignificantwaveheight,averagedover3hours,withanannualprobability3.8extremewaveheight极端波高expectedvalueofthehighestindividualwaveheight(generallythezeroup-crossingwaveheight)withanannualprobabilityofexceedanceof1/N(“recurrenceperiod”:Nyears)最高单个波高的期望值（通常为向上跨越零点的波高），超过这个期望值的年概率为1/N（“重复周期”：N年）3.9fasticecover固定冰盖arigidcontinuouscoveroficenotinmotion静止状态下的连续刚性冰覆盖层3.10fetch风距distanceoverwhichthewindblowsconstantlyovertheseawithapproximatelyconstantwindspeedanddirection风以近似恒定的风速和风向持续地吹过海面所经过的距离3.11foundation基础partofanoffshorewindturbinesupportstructurewhichtransferstheloadsactingonthestructureintotheseabed.DifferentfoundationconceptsareshowninFigure1togetherwiththeotherpartsofanoffshorewindturbine.海上风力发电机组的支撑结构的组成部分，能将作用在结构上的载荷传递到海床上。不同类型的海上风力发电机组基础以及其它部分如图1所示。3.12highestastronomicaltide最高天文潮higheststillwaterlevelthatcanbeexpectedtooccurunderanycombinationofastronomicalconditionsandunderaveragemeteorologicalconditions.Storm