闸 LATCHES AND KEEPER ASSEMBLEDS ; LATCHES AND KEEPER A EMBLEDS ; Lduring theches And Keeper Assembleds
及闸 AND gate
保护和跳闸 protection and trip
闸坝法 lock-and-dam method
涨落潮闸门 ebb and flow gate
跳闸与监测系统 trip and monitoring system
闸软管及接头 brake hose and coupling
船闸充水与泄水系统 lockfilling and emptying system
解列重合闸 Power system splitting and reclosing
船闸充水和泄水系统 locking filling and emptying system
Protective countermeasures are under development, including lens shutters and filters that block certain laser frequencies.
防御性对策正在开发，包括透镜光闸及滤波器，能阻止某个频谱的激光。
Convenient stores and small shops are in some stations, lined up just outside the turnstiles.
一些地铁站有便利店和小商店，就在出入闸机外面。
If the floodgates prove ineffective, though, Unesco and the European Union may eventually step in to help develop a long-term solution to help save this World Heritage Site.
但如果防洪闸不起效，联合国教科文组织和欧盟也许会介入，寻找拯救这一世界遗产的长期方案。
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