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Both ACEI with or without sulfhydryl groups could prevent the H2O2 induced decrease in contraction responses to PE in intact aortic rings. The increase of NO and activation of HO-1 might be involved in the mechanism.

含有和不含筑基的ACEI均具有对抗H2O2引起的血管收缩功能下降的作用，其主要机制可能是通过引起NO产生增加和诱导HO-1而实现的。

As direct recordings for sound production in live specimens of this species could not easily be carried out, function of these swim bladder muscles was assessed by means of biochemical assay. Activities of Citrate synthase and L-lactate dehydrogenase, known to involve with energy supply during muscle contraction were assessed.

而直接测量活体的发音有执行上的困难，因此用酵素分析(包括Citrate synthase ，CS 与 L-lactate dehydrogenase ，LDH)来探讨此鱼鳔附属肌肉急其他不同类型肌肉之间的代谢模式，并用组织染色法测量肌纤维截面积可探究此肌肉之功能。

The first stage of meiosis, constituted by a series of events that include DNA replication, the synapsis of homologous chromosomes, crossing over, the formation of chiasmata, and contraction of the chromosomes.

前期阶减数分裂的第一个阶段，由一系列的事件组成，包括脱氧核糖核酸的复制，同种染色体结合、交叉，染色体形成以及染色体的收缩一套，一系列

The first stage of meiosis ,constituted by a series of events that include DNA replication,the synapsis of homologous chromosomes,crossing over,the formation of chiasmata,and contraction of the chromosomes.

前期阶减数分裂的第一个阶段，由一系列的事件组成，包括脱氧核糖核酸的复制，同种染色体结合、交叉，染色体形成以及染色体的收缩

DNA'.'' replication, the synapsis of homologous chromosomes, crossing over, the formation of chiasmata, and contraction of the chromosomes.

复制'。''，同种染色体结合、交叉，染色体形成以及染色体的收缩

Pressure, which reflects the higher systolic blood pressure and heart contraction strength is higher,...

压力大，则反映收缩压较高和心脏收缩强度较高，。。。

A small four-wheel tractor air BALANCING VALVES brake valve tappet is made of plastic, and its diameter and length are often vulnerable to the effects of thermal expansion and contraction changes, resulting in air brake failure.

小四轮拖拉机的气制动阀挺杆是由塑料制成的，其外径、长度往往易受热胀冷缩的影响而改变，导致气制动阀失灵。

Barrington's nucleus that located in the pontine dorsolateral tegmentum is an important site for controlling voiding in the mammalian brain and is often referred to as pontine micturition center. Barrington's nucleus sends direct projection fibers to the sacral parasympathetic nucleus in which parasympathetic preganglionic neurons innervating detrusor muscles of the bladder are distributed. Electron or chemical stimulation of Barrington's nucleus clicits bladder contraction and increases discharges of bladder postganglionic nerve. Conversely, lesion of the nucleus results in a permanent inability to empty the bladder. On the other hand, an area located just ventral to Barrington's nucleu has been reported to send projection fibers to the ventrolateral group of Onuf's nucleus in the caudal lumbar cord segments; the vetrolateral group of Onuf's nucleus is mainly composed of pudendal motor neurons innervating the external urethral sphincter muscle.

Barrington's核发出纤维投射至支配膀胱逼尿肌的骶髓副交感核，毁损该区可导致动物永久性失去排空膀胱的能力；而电刺激或化学刺激该区可引起支配膀胱的节后纤维放电增加和膀胱逼尿肌收缩。D区是紧邻Barrington's核腹侧的一团神经元，它发出纤维投射至腰骶髓Ounf核的腹外侧群，而Ounf核的腹外侧群主要是由支配尿道外括约肌的阴部神经运动神经元组成。

The former one appears in stimulation of worm activity, spasmodic contraction of worm musculatures and severe damage to the tegument, which results in hepatic shift of schistosomes, influence on the nutrition absorption, excretion/secretion and defense function of the tegument, followed by the secondary interference with the worm metabolism.

前者表现为虫体活动兴奋，肌肉挛缩和皮层严重受损，从而导致虫的肝移，影响虫的体表营养吸收、排泌和防御功能以及继发的代谢紊乱；后者因皮层的损害和剥落破坏了虫体在宿主体内存活的伴随免疫机制，其体表抗原的显露为宿主抗血吸虫特异性抗体的免疫攻击提供了靶部位，即吡喹酮的抗血吸虫作用是免疫依赖的。

Bacterial or viral infection of the intestine may result in explosive watery diarrhea, tenesmus (spasmodic contraction of anal sphincter with pain and persistent desire to defecate), and abdominal cramping pain.

肠道被细菌或病毒感染，引起暴发性水泻、里急后重（肛门括约肌痉挛性收缩伴疼痛，一直想要排便）及腹部绞痛。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。