unprotected opening

protected opening

有保护的墙身洞口耐火极限要求的门

A flared opening for a gun in a wall or parapet.

枪眼，炮眼在墙或护墙上开的用于射击的洞口

Eave wall and the bottom should shoot and should not be handled without drilling holes in the wrong.

檐口和墙下端应呈直线，不应有未经处理的错钻孔洞。

Experimental Research of Seismic Behavior of Coupling Beams with Efficacious Detailing of Shear Walls Resistance;

抗震剪力墙小跨高比洞口连梁有效配筋方式的试验研究

It seemed to him that thus he better guarded the unfinished opening.

他觉得这样似乎可以把那未挖成的洞口保护得更严一点。

A barrier that protects a harbor or shore from the full impact of waves.

防波堤，防浪墙保护一个港口或海岸以防波浪冲击的障碍物

In the walls of the cubicle there were three orifices.

办公间的墙上有三个孔洞。

His body was protected by armour fore and aft.

他的身体前前后后都有盔甲保护。

Discussion on calculation of the most width of cave in ground wal of brick structure;

砌体结构房屋底层墙体开洞时洞口最大宽度计算的探讨

Shear Resistance of Cold-Formed Steel Compound Wall with Openings;

开门窗洞口的冷弯薄壁型钢组合墙体抗剪性能

Exquisite fashion. Semicircle shape, but it can be introducing. Design of holes can be placed in an orderly manner mouthwash various appliances.

精美时尚.半圆造型,可以贴墙而放.设计中的小洞可以有条不紊地放置各种漱口用具.

Parallel Port Terminal Network With ESD Protect

具有防静电保护的并行端口终端网络

All information are keep secret and protect by firewall.

隐私权保护政策—中西花店对您的资料绝对保密，并有安全措施完善的防火墙保护.

Round the cave stood groups of the men who had escorted us.

洞口的四周站着一群男人守护我们。

The report includes the excavation materials of5 sites: Laohushan, Yuanzigou, Xibaiyu, Mianpo and Damiaopo.

其中在老虎山、白玉和大庙坡发现史前古城墙，在园子沟等遗址有保存良好的白灰面窑洞式房屋。

I noticed a hole in the wall.

我注意到墙上有一个洞。

protected with battlements or parapets with indentations or embrasures for shooting through.

用锯齿状的和有可以射击的枪眼的城垛、胸墙保护。

Construction Techniques of Diaphragm Wall Considering the Protecting of Flood Prevention Wall

基于防汛墙保护的地下连续墙施工技术