小孔ostium 系海绵动物的体壁外面,即皮层中无数散在性的小孔,水流由此进入沟系。具单沟型沟系的海绵,由进水小孔流入的水经胃腔从上端的出水孔排出,因此自进水小孔贯通体壁到达胃腔的管有两个孔:体表的孔(即入口)和胃腔壁的孔(即出口)。前者称为皮孔(dermal ostium),后者称为胃孔( gastralostium)。钙质海绵纲单沟型的皮孔称为孔(pore),双沟型和复沟型的皮孔称为小孔ostium,以示区别。此外,位于节肢动物心脏侧面的孔——心门——亦称ostium。
n. ostiole ; micropore ; stoma
misc. foraminule
Keyhole plasma arc welding (PAW) is a high-energy and high-efficiency technology, it has a wide application area.
小孔等离子弧焊接是一种高能高效焊接方法,具有十分广阔的应用前景。
参考来源 - 受控脉冲穿孔型等离子弧焊接工艺参数的控制·2,447,543篇论文数据,部分数据来源于NoteExpress
如果你照镜子,你会看到眼角有小孔。
If you look in a mirror, you can see tiny holes in the corners of your eyes.
一种叫作套管针的器械会在腹壁上扎一个小孔。
An instrument called a trocar makes a puncture in the abdominal wall.
三只小孔雀出生了。
many of these ion channels have this size exclusion pore, it's a very important part of them.
很多离子通道也都有这样的具有尺寸排斥性的小孔,这是它们非常重要的组成部分。
you make a little hole, and go in with an instrument instead of making an incision.
医生会先打开一个小孔,将仪器伸进去。而不是像以前一样做一个切口。
You did not see a tiny, tiny little stream coming out of each of these orifices.
你看不到细小细小的光束,从这些小孔里出来。
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