1.
Males have no penises and are armed with a genital opening which looks little different from that of a female.
雄鸟没有阴茎只有一个与雌鸟相比区别不大的生殖管道开口。
2.
On Detailed Design of the Pass in and out Openings of Non-excavation Construction Pipeline
非开挖施工管道进出洞口的细节设计
3.
Canadian Oil Sand Resource Exploitation Boosts Export Pipeline Construction;
加拿大油砂开发带动出口管道建设大发展
4.
To determine the caliber of(a tube).
确定（管道的）口径
5.
An opening in the pipe of an organ.
口琴乐器管上的开口
6.
Now the urethral tissue has been trimmed, and has been brought through the lower incision in the vulva, creating the new urethral meatus.
现在尿道的组织已经修整好，并且从会阴上较低的那个开口拉出来，开辟成一个新的泌尿管道。
7.
coronary sinus:a venous sinus that opens into the right atrium of the heart and serves to drain the coronary veins.
冠状窦:开口于右心房的静脉管道,用于输冠状静脉的血入心脏.
8.
The end of the discharge line opening should terminate near a floor drain or other suitable location not subject to blocking or freezing.
排泄管道的终端开口必须靠近地漏或其他不会堵塞或冻结的地方。
9.
an abnormal condition in which a normal opening or tube in the body (as the urethra) is closed or absent.
身体中正常的开口或管道被闭合或缺少的不正常状态。
10.
Data Processing of the Big Calibre Pipeline Flow & Development of Communication Module;
大口径管道流量测量中的数据处理和通讯模块开发
11.
Complete left biureteral deformity combined with ectopic ureteral orifice in urethra:case report
左侧完全型双输尿管畸形伴开口异位于尿道1例
12.
Sediment begins to choke the channel's opening.
沉积物开始淤塞河道口。
13.
Long John answered for himself.
高个子约翰开口回答道：
14.
opens and closes a passageway by sliding over a port.
通过滑行端口开关通道。
15.
A body opening or passage, such as the opening of the ear or the urethral canal.
道口身体的开口或通道，如耳朵眼或尿道
16.
"Shut off the electric power supply to heater, close cold water inlet, open a hot water faucet to allow air to enter the system and open the drain valve, which is threaded to receive a standard hose coupling."
首先关闭电源开关,关闭冷水进口阀门,打开热水水龙头让空气进入管道系统,并且打开排水阀。
17.
Fast-opening blind is applied in the circular hatch of pressure pipeline and pressure vessel, which can be opened and closed fast.
快开盲板是用于压力管道或压力容器的圆形开口上并能实现快速开启和关闭的一种机械装置。
18.
remote supervision of level crossings
平交道口的远程管理