查询词典 p. d.

Results show that floes' VC and D at the surface water were closely related to current velocity; and the peaks of VC lag those of the current velocity. The lag variation during ebb and flood tides is 10-30min and 30-50 min, respectively. Current velocity at 50 cm/s is a turning point of D vs. vertical average current velocity, before the point, Dm increases with current velocity, and decreases after the point. Similarly, VC at 75μl/L becomes a critical point in the surface water, below the point, D increases with VC, and above the point, D stabilizes.Δp is D dependent, larger floes have much lower Δp than smaller floes. Both D and Δp of floes affect ω. In the surface water during spring tide and neap tide, a power exponent relationship exists between Δp and D, and ω and D.

研究表明：①长江口徐六泾表层絮凝体体积浓度主要受水流流速影响，再悬浮现象明显，体积浓度过程线滞后流速过程线，落潮期间滞后10-30min，涨潮则滞后30-50min；②小于一定流速时絮凝体平均粒径随流速增大而增大，大于一定流速时絮凝体平均粒径则随流速增大而减小，徐六泾夫、小潮表层絮凝体在50cm/s的垂线平均流速时出现平均粒径与垂线平均流速关系的转折；③徐六注大、小潮表层絮凝体平均粒径在体积浓度75μl/L时出现平均粒径与体积浓度关系的转折，体积浓度小于75μl/L时粒径随体积浓度增加而增大，超过75μl/L时粒径随体积浓度的增加变化不明显；④絮凝体有效密度由粒径大小控制，粒径大，有效密度小，反之亦然，粒径和有效密度共同决定絮凝体静水沉速，有效密度和沉速与平均粒径之间均存在良好的幂指数关系。

Its formation, objectives and research activities by P.D.

它是由&世界卫生组织 1211，日内瓦 27 号，人类生殖研究，开放及研究培训项目中心&的格里芬博士建立和主导。

Yet that is what Britain's constitution currently allows: Ruth Rendell, creator of Chief Inspector Wexford, and P.D.

美国《联邦论》作者们的答案是，在制定国法中连侦探小说家也能发表意见，这可不是一句玩笑话。

30S… A veteran cop from the Baltimore P.D., he has recently undergone an acrimonious divorce and has transferred to Hawaii to be near his 7 year old daughter.

DETECTIVE DANNY &DANNO& WILLIAMS ，丹尼侦探，30多岁，一个巴尔的摩经验丰富的警察，离了婚，迁居到夏威夷离他七岁大的女儿不远的地方。

Please call the Las Vegas P.D.

请拨打，拉斯维加斯警察咨询热线

Bakersfield, P.D., a flaky, funny, sweettempered comedy that looks like no other show on Fox, or anywhere else.

节目。这个疯狂、滑稽、不带火气的喜剧在整个福克斯公司找不到类似的节目，别的地方也同样找不到。

LaGuardia Tower, this is P.D.

拉瓜迪亚塔台，这里是警署一号机

Considering lower-order modes and fifth-order Taylor series expanded on the electrostatic force, the static pull-in position and voltage in closed forms are obtained; furthermore, the dynamic pull-in voltage are also found based on the analysis on the P.D.

应用Galerkin method 在偏微分方程式使之成为离散之系统，并利用低阶mode与Taylor五阶展开近似静电力去解之，进而可获得静态崩溃电压的位置和封闭式方程式。

Methods: A cross-sectional study was carried out at a medical center in northern Taiwan. A total of 205 healthy mother-infant pairs were recruited. A tool to assess insufficient milk supply developed by P.D. Hill and S.S. Humenick (1996) was used to gather breastfeeding information during each participant's hospital stay.

采横断面研究设计，於北部某医学中心进行收案，共收案205名健康足月生产之母婴，使用Hill及Humenick所发展乳汁分泌评估工具，於产妇住院期间搜集哺乳资讯。

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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。