Having little water in the lumen, creates a relatively high potassium concentration in the lumen.

水份较少时，管腔中钾离子浓度就会相应升高。

They can put out up to 100 lumens per watt.

它们可以输出高达每瓦 100 流明。

Also, though, these vessels can relax or vasodilate, and the lumen's diameter increases, which allows more blood flow.

不过，这些血管也可以舒张，即血管舒张，以扩大管腔直径，让更多的血液流过。

An equivalent CFL will get you way more, between 55 and 70 lumens per watt.

等效的 CFL 将为您提供更多，每瓦 55 至 70 流明。

Finally, there's an inner ring of luminal columnar cells, which are within the lumen or center of the gland.

最后是一层管腔柱状细胞，位于管腔内或腺体中央。

This causes a decreased blood flow through its lumen, or hollow center.

这导致通过其内腔或中空中心的血流减少。

The CR Revelation lighting package can produce up to 48,000 lumens in total, with as many as 27 LED lights.

CR Revelation 照明套件总​​共可产生高达 48,000 流明的光，配有多达 27 个 LED 灯。

So this means that phosphate is left in the lumen and eventually gets sent out in the urine.

这意味着磷酸盐留在了管腔内，最终通过尿液排出体外。

Bicarbonate helps neutralize the acidic chyme, and raising the pH in the intestinal lumen also helps digestive enzymes work more effectively.

碳酸氢盐能够中和酸性的食糜，还能提高肠腔内的pH值；这也可以提高消化酶的活性。

Different varieties of tracheostomy tubes include cuffed, non cuffed, double lumen tubes, tubes with speaking valves, metallic tubes, and so on.

不同种类的气管造口管包括带套囊的管、没有套囊的管、双腔管、带发声阀的管、金属管等。