The fifth anniversary may be the last one at the Ground Zero site.
五周年纪念可能是在“归零地”（世贸中心双子大厦变成的一堆废墟）举行的最后一次纪念活动。
A sign hanging over the entrance read, “Ground Zero.”
入口处悬挂的标牌上写着“新起点”。
We always reject zero as an eigenfunction on the ground of physics.
根据物理上的理由，我们总是剔除把零作为本征函数。
An actual contact surface burst leads to the highest possible overpressures near ground zero.
对于实际接触表面爆炸情况，在地面零点附近可形成最大的超压力。
Strictly prohibited ground connected to the zero line or water pipe.
严禁将地线接在零线或自来水管上。
The zero-sequence current protection is an important means of power system ground protection.
零序电流保护是一种重要的接地保护方法。
The zero-sequence current protection is an important means of power system ground protection.
零序电流保护是一种重要的接地保护方法。
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