大多数螺旋形的蜗牛主要是右旋的。
然而，一些卵壳中会出现反向螺旋的蜗牛，多数情况下是在左旋卵壳中，右旋的出生率惊人地高。
However, some broods possess a few snails of the opposing hand, and in predominantly sinistral broods, the incidence of dextrality is surprisingly high.
如果发现了氨基酸，并且它们普遍表现出同一种偏向性——要么像地球上的氨基酸一样是左旋的，要么是右旋的，那将会格外有趣。
If amino acids are found, it would be especially interesting if they show a prevalence of one type of handedness, either left, like amino acids on Earth, or right.
是一种右旋的生活在海洋潮间带岩石上的螺。
The owl limpet (Lottia gigantean) which clings to rocks in the ocean intertidal zone has a "right-handed" body organization.
济阳运动的成因，与郯庐断裂从左旋转向右旋的活动密切相关。
The origin of the Jiyang movement is closely related to the transformation of the Tanlu Fault Belt from sinistral to dextral movements.
在生物化学中，手性是有意义的，如左旋和右旋的物质气味可能不同。
In biochemistry, handedness can matter. Left - and right-handed versions may, for example, smell different.
右旋的软体动物的螺形外壳上的螺线顺时针螺旋即顶点向上，面对观察者时，螺线向。
Of or relating to a gastropod shell that coils clockwise and has its aperture to the right when facing the observer with the apex upward.
在锥实螺的例子中，研究表明右旋基因是在卵的形成期表达的。
In the case of Lymnaea peregra, studies indicate that a dextral gene is expressed during egg formation.
在实验中，右旋卵子的细胞质注射改变了左旋卵子的形态，但是左旋卵子的细胞质注射不会影响到右旋卵子。
In experiments, an injection of cytoplasm from dextral eggs changes the pattern of sinisterly eggs, but an injection from sinisterly eggs does not influence dextral eggs.
在实验中，用取自右旋卵子的细胞质进行的注射，可改变左旋卵子的模式；用取自左旋卵子的细胞质进行的注射却不能影响到右旋卵子。
In experiments, an injection of cytoplasm from dextral eggs changes the pattern of sinistral eggs, but an injection from sinistral eggs does not influence dextral eggs.
此外，左旋和右旋蜗牛可能无法交配，因为它们的扭曲方向不相容。
In addition, perhaps left and right-handed snails cannot mate with each other, having incompatible twist directions.
这种结合不对称、解剖学和偶然性的进化论机制并未提供一种充分的解释，以说明蜗牛的右旋何以会成为主要的旋向。
This evolutionary mechanism combining dissymmetry, anatomy, and chance does not provide an adequate explanation of why right-handedness should have become predominant.
在法国拉斯科洞穴中发现了冰河时代晚期的绳索，这条绳索由向右旋转的纤维捆成，因此它是由右撇子编成的。
The late Ice Age rope found in the French cave of Lascaux consists of fibers spiraling to the right, and was therefore tressed by a righthander.
要研究发酵的黑麦麸是否能保护接受右旋糖酐硫酸钠（DSS）的模型小鼠免于结肠炎。
To investigate whether the fermented rye bran can protect the model mice receiving dextran sulfate sodium (DSS) from colitis.
构成生命体的许多关键分子都有一个特定的导向，或者说是旋向性：脱氧核糖核酸右旋，氨基酸左旋。
Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left.
化学家们在实验室合成有机化合物的时候，常常会得到一堆分子：一半右旋，一半左旋。
When chemists synthesize organic compounds in the lab, they often wind up with a mix of molecules: half are right-handed, and half are left.
它不仅携带了右旋和左旋氨基酸，而且还包含几十种生命至始至终从来不会利用的特殊氨基酸。
Not only does it carry both right - and left-handed versions of normal amino acids; it also contains dozens of exotic amino acids that life ended up not using at all.
如果您向右旋转90度，然后走两步，这时您所处的位置显然与先走两步再转身不同。
If you turn 90 degrees to the right and walk two steps, you end up in a different position than if you first walked two steps and then turned.
在生命诞生之时，我们的祖先就作出了选择：糖右旋，氨基酸左旋，这个规律延续至今。
When life arose, our ancestors made some choices. They went with the right-handed sugars, and the left-handed amino acids, a tradition still in effect.
几乎无法想象左旋本身会给左旋者带来任何不利之处。 然而，左旋与右旋蜗牛彼此间实际上并不呈真正的镜像对称....。。
But left- and right-handed snails are not actually true mirror images of one another…
红外灯跟随球机一起上下左右旋转，充分利用光源，使摄像机一直拍摄到清晰的图像。
Infrared light is about to follow the ball up and down with rotating machine, full use of light, so that the camera has captured a clear image.
低血浆浓度和高血浆浓度的右旋美托嘧啶对于健康男性心肌患者心肌灌注和心功能的作用。
CME Effects of Low and High Plasma Concentrations of Dexmedetomidine on Myocardial Perfusion and Cardiac Function in Healthy Male Subjects.
然而现在已经变为右旋占多数的蜗牛种类，其旋向性（壳的螺旋方向）一度也曾均衡分布，在某些种类中，甚至左旋曾占优势。 。
Butt at one time, handedness (twist direction of the shell) was equally distributed within some snail species that have become predominantly dextral or, in a few species, predominantly sinistral.
该平台结构相对紧凑、运动范围广；左右旋转电机固定在底座上，减少了俯仰转动惯量，提高了平台的灵活性。
The pan driving motor assembled on the foundation. Thus this can reduce tilt's moment of inertia and increase the platform's agility.
样品经酸水解，测得右旋糖酐铁中右旋糖酐的重均分子量和分子量分布。
The average molecular weight and molecular weight distribution were determined with acid hydrolyzed iron dextran samples.
目的研究高渗氯化钠右旋糖酐70注射液的稳定性。
OBJECTIVE to study the stability of hypertonic sodium chloride dextran 70 injection.
目的建立适用于纳米铁包合物中铁及右旋糖酐含量测定的方法。
Objective to establish an optimal method to determine the contents of Fe and dextran in the nanometer iron compound.
目的：探讨改良低钾右旋糖酐（LPD）溶液在心肺移植术中的肺保护作用。
Objective To determine the application of modified low-potassium dextran (LPD) solution in heart-lung transplantation.
目的：考察精制红花注射液与右旋糖苷- 40葡萄糖注射液的配伍稳定性。
Objective: To study the compatible stability of Rifine Safflower injection and Dextran 40 Glucose injection.
目的：考察精制红花注射液与右旋糖苷- 40葡萄糖注射液的配伍稳定性。
Objective: To study the compatible stability of Rifine Safflower injection and Dextran 40 Glucose injection.
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