大家都搜：
观察孔
1、under observation───受到观察；在监视下；在观察中，在监视下
2、observation tower───瞭望塔
3、door───n.门；家，户；门口；通道；n.(Door)人名；(英)多尔
4、observation───n.观察; 监视; 评论；n.观察；监视；观察报告
5、outlying observation───反常值
6、anecdotal observation───轶事观察
7、observation post───观测所；[军]观察哨；观察所
8、colonnade observation───柱廊观察
9、door to door───挨家挨户；门到门
1、The passenger door and observation door are installed at the intermediate height of door.───行人门及观察窗在门扇的高度上居中；
2、Inner glass door design: the device is equipped with a well-sealed inner glass door to facilitate real-time observation by the experimenter of the samples in the device.───玻璃内门设计：配备观察用玻璃门，在加强密封的同时方便实验者实时观察设备内样品。
3、observation window on the door is made of double-layer tempered glass, the material heated in the oven can be observed clearly, meanwhile, the thermal insulation is well.───观察窗为双层钢化玻璃结构，能清晰观察箱内加热的物品，又有良好的隔热效果。