收缩血管的

To conserve blood that will be needed by muscles, skin vessels constrict while vessels of the muscles dilate

为了保存肌肉所需要的血液，皮肤血管收缩，而肌肉血管舒张。

METHODS: The rabbit hindlimb normothermic tourniquet ischemia model was employed. The tendon on the dorsum of the foot was exposed for observation of microvessels. The responses of arterioles on tendon surface to topical application of 10(-6) mol/L noradrenaline, 10(-6) mol/l acetylcholine (an endothelium-dependent vasodilator) and 10(-4) mol/L nitroglycerin (an endothelium-independent vasodilator) were observed at the period of ischemia and following 30 minutes of reperfusion after 2 hours and 5 hours of ischemia by use of intravital microscopy.

应用兔后肢止血带常温缺血模型及足背肌腱表面微循环观察法，观察肢体缺血 2小时及 5小时再灌注后微动脉对局部滴注血管收缩剂 [去甲肾上腺素(10 - 6 mol/ L ) ]、内皮依赖性血管舒张剂 [乙酰胆碱(10 - 6 mol/ L ) ]及内皮非依赖性血管舒张剂 [硝酸甘油(10 - 4 mol/ L) ]的反应性变化。

In contrast, the dilatory responses to the nitric oxide donor sodium nitroprusside and olume expansion were enhanced.

与此相反，对硝普纳的扩血管效应则提高。而此些收缩反应和扩血管效应能够被NO合成抑制剂N-硝基-L-精氨酸甲酯所纠正。

We also found that FHL2 is important in the regulation of vasomotor tone, or the contraction and relaxation of muscles in the blood vessel.

Hata说，我们已经发现FHL2是调节血管紧张性或收缩和舒张血管肌肉的重要蛋白。

Estrogen can cause fetal congenital heart defects, large vascular malformation, hydrocephalus, cerebral meningocele, visceral malformations, hydrocephalus, meningeal, bulging, visceral malformations, feminization of male fetus, penile deformity , cervical abnormalities, but also easy to cause miscarriage, stillbirth and ectopic pregnancy.

雌激素可引起胎儿先天性心脏缺陷，大血管畸形，脑积水，脑脊膜膨出，内脏畸形，脑积水，脑脊膜，膨出，内脏畸形，男胎女性化，阴茎畸形，宫颈畸形等，还易引起流产，死胎和异位妊娠。2、黄体酮可使妇胎生殖器男性化，出现阴蒂肥大，阴唇吻合等。3、先锋霉素：可通过胎盘屏障碍进入羊水中，对胎儿的安全性有影响。4、如有子宫收缩可引起先兆流产或先兆早产，应去医院请医生处方遵医嘱应用硫酸舒喘灵等舒缓平滑肌收缩的药物直至子宫收缩停止。

After acetylating, the effect of the transformed PAF on platelet aggregation was compared with that induced by standard PAF for quantification.

目前发现PAF除引起血小板聚集外，还具有较为广泛的生物学作用，如增加血管通透性、促进白细胞趋化与激活、扩张血管、抑制心功能及收缩支气管等〔。

These drugs reduce blood pressure by blocking an enzyme that converts angiotensin to an active form that constricts blood vessels.

这些药物通过拦阻激活血管紧张肽的酶降低血压。血管紧张肽造成血管收缩。

Blowing fan near the fan when the side of sweat evaporate quickly, the skin surface temperature dropped, blood vessel contraction, while the other side of the skin surface temperature is still high, blood vessel expansion .

吹风扇风扇附近时，汗水迅速蒸发侧，皮肤表面温度下降，血血管收缩，而在皮肤表面温度的另一边仍然很高，血管扩张。

These compounds inhibit an enzyme called angiotensin--converting enzyme, which is responsible for making the muscle cells in blood vessels contract, which drives blood pressure up.

这些化合物能抑制一种叫血管紧张肽—转化酶的酶，这种酶使血管肌细胞收缩，从而驱使血压上升。

This, in turn, trapped in cold water for physical contact when the skin vasoconstriction, blood pressure increased slightly, only a very short time; soon surface on the re-expansion of blood vessels, a large number of vascular blood flow to the skin, the blood pressure at this time, it has not been exposed to cold water than also slightly more.

这又困为身体接触冷水时表皮血管收缩，血压略微升高，只是很短暂的时间；很快表皮的血管就再度扩张，大量血液流向皮肤的血管，这时的血压，就反而比未接触冷水时还稍低些。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。