Dry air is a good insulator, but sea water is not.

Fat is an excellent insulator against the cold.

脂肪是极好的抵御寒冷的绝热体。

The FRP is an insulator to electricity, so it is good in safety.

因FRP材质 不导电, 因而灯杆用电安全性能好.

A loose mulch acts on the surface as an insulator.

疏松的覆盖物在土壤表面起了隔热的作用.

The atoms of an insulator hold their electrons very tight.

绝缘体的原子把电子抓得很牢.

Shellac also happened to be an effective electrical insulator.

紫胶恰巧还是一种有效的绝缘物.

Even in an insulator the electrons can move about without leaving their parent atoms or molecules.

甚至在绝缘体内,电子也能不离开它所属的原子或分子而运动.

In a hot climate the condensation will be on the inner surface of the insulator.

在气候炎热时,凝结水将出现在隔热层的内表面.

Semiconductors have properties different from those of conductors and insulators.

半导体具有不同于导体和绝缘体的特性.

Plastic, cloth, glass and dry air are good insulators.

塑料 、 布 、 玻璃和干燥的空气都是很好的绝缘体.

Conductors let electricity through, but insulators don't let through.

导体让电流通过, 而绝缘体则不让通过.

Insulators in reality conduct electricity but their resistance is very high.

实际上绝缘体也导电,但电阻很高.

In metals all electrons are free, and in insulators they are fixed.

金属里面电子是自由运动的, 但在绝缘体里面是不动的.

Insulators in reality conduct electricity but, nevertheless, their resistance is very high.

绝缘体实际上也导电, 但其电阻很高.

Things made of bamboo are insulators, which function very well.

竹木制品是绝缘体, 具有很好的防导电功能.

To reduce heat losses the pipes are covered by thermal insulators.

为了减少热散失,管子外包保温层.

Objects which cannot let electricity pass through are called insulators.

不能让电流通过的物体叫做绝缘体.

I got my insulin , all right, but they broke all the damn needles.

我想要胰岛素, 但他们把针打碎了.

Insulin is secreted by the pancreas.

胰岛素是胰腺分泌的。

Diabetics who must take extra insulin should take care not to overdo it.

需要额外服用胰岛素的糖尿病患者,应该小心,不要服量过多.

Was the test used to measure insulin sensitivity off by the supplements?

设计该测试是用来测量被维生素补剂抵消掉的胰岛素敏感性 么 ?