The properties development production and process of molding FRP well lids and waterspout lids are introduced systematically .

本文较为系统地介绍了模压玻璃钢 井盖、 水 算的特性，发展 前景及生产成型工艺。

Tornado whirlwind and waterspout

龙卷、旋风和 水龙 卷

The device in the mouth of Changli Well was reconstructed in Oct. 2002 . That the waterspout became small after the reconstruction caused the groundwater level rising .

2002年10月昌黎井井口装置进行改造，改造之后 排水口变小，引起了水位趋势上升变化。

Two men were missing after a waterspout swept through the city harbour on Friday night .

两个人在周五夜晚 海龙 卷袭击城市港口后失踪。

The waterspout lasted around five minutes and expired before landfall .

此次 “ 龙 吸水 ”持续时间大约为5分钟，随即在 海面 上 消失。

The observatory said the relatively strong localized convection led to the formation of the waterspout .

天文台表示，是相对强烈的地区性对流活动，导致了 此次 水龙 卷的形成。

Small fish rained down on a village in southern india . a scientist said they were probably picked up by a waterspout or mini-tornado out at sea .

印度南部小村庄突然下起“小鱼”雨。科学家说它们很可能是被 龙卷风从海上卷来的。

This artificial hurricane rushed like a waterspout through the air .

人造暴风，象 龙卷风一样突然窜 上高空。

A scientist said they were probably picked up by a waterspout or mini-tornado out at sea .

科学家说它们很可能是被 龙卷风从海上卷来的。

Research on molding FRP well lid and waterspout lid

模压玻璃钢井盖、 水 箅的研究