chiasma

Chiasma (pl.chiasmata) A connection between homologous chromosomes seen during the prophase stage of meiosis.

交叉：在细胞减数分裂的前期，同源染色体之间形成的接触点。

Conclusion The cause of lost vision was accidental injury of the optic nerve or the optic chiasma during s...

结论术后视力下降可能为鞍区肿瘤经颅手术误伤视神经或视交叉所致。

Certainly, elects specialized also to choose segmentations as far as possible, the type of chiasma, the practical specialty.

当然，选专业还要尽量选一些细分型、交叉型、实用型专业。

From the time since humans have had consciousness, the two categories have had the relationship of chiasma and penetration.

所以自古以来就在两者之间有了一种交叉互渗的联系。

Results Orbit tumor of a 21 year old young lady extends the encephalic and endangers the olfactory nerve and optic chiasma, even cause olfaction and visual acuity to be declined.

结果1例21岁女性患者,眼眶肿瘤侵入颅内损伤嗅神经及视交叉,引起嗅觉及视力下降。

The axons from the nasal half cross the brain at the optic chiasma to join with axons from the temporal half of the other eye before passing into the lateral geniculate body.

鼻子面的轴突在脑的视交叉与另一只眼的太阳穴面的轴突结合后进入外侧膝状核。

Today, with the changing quickly computer technology and in-depth subjects chiasma, the traditional safety monitoring work is being endowed with much more new content.

在计算机技术日新月异，学科交叉日趋深入的今天，传统的安全监测工作正被赋予更多新的内容。

OxyHb is evident over the dorsal neocortex around the injection point right after injection without distribution in optic chiasma cistern and basilar cistern.

于注血后即刻灌注取脑，发现OxyHb集中于注射点脑皮质表面，而脑基底池和视交叉池等蛛网膜下腔未发现OxyHb分布。

In order to improve the local search ability, after the chiasma operation, simulation anneal mechanism is introduced, and a new aberrance operation is used.

为提高遗传算法的局部搜索能力，在交叉操作后引入模拟退火机制，并采用一种新的变异操作，每次变异产生二个子代，然后根据情况取舍，引入接受相对差的子代的概率，这样可以一定程度上避免陷入局部极值。

The chiasmata can slip off the ends of the bivalents, and thus chiasma frequency may be reduced by terminalization.

有时交叉可以从二价体末端处滑开，因此移端过程可以降低交叉频率。