反向

Key words: numerical control machine tool; numerical control machining; opposite clearance; vector operation; precompensation

关键 词：数字控制机床；数控加工；反向间隙；向量运算；预补偿

The fragments were then cloned into pAct15Gal vector in opposite directions to generate the RNAi vector against allantoicase gene.

将这两个基因片段反向插入表达载体pAct15Gal中，构建了用于尿囊酸酶基因RNAi的载体。

According to the view of Google, the computation that PR is worth is having very complex algorithm, but what need not oppugn is, the amount of retrorse link and quality are having conclusive effect to PR value.

按照Google的说法，PR值的计算有着非常复杂的算法，但是不用质疑的是，反向链接的数量和质量对PR值起着决定性的影响。

In order to find optimum reduction of information system, this paper adds the converse eliminate action until cannot delete.

为了能找到信息系统的最优约简，在此基础上加了一个反向消除过程，直到不能再删为止。

An improved method was proposed in order to accelerate the convergence speed and shorten the training time of BP neural network.

0引言BP神经网络是一种基于误差反向传播算法的神经网络，由于具有高度非线性映射的能力，现已在各领域得到了广泛的应用，取得了令人满意的结果[1]。

Negative assorative mating occurs when dissimilar phenotypes breed together, leading to OUTBREEDING.

反向选型交配则发生在不相似的表型在一起生育时，可以导致异系交配。

In this mode, the device will limit the output reverse current.

在这种模式下，器件会限制输出反向电流。

Oxyhydrogen isotope relationship curve in the region indicates that the samples basically distribute in the upper left of local rainwater line and an obvious phenomenon of reverse "Oxygen drifting" exists. This kind of isotope distribution is the only one in the most karst groundwater in northern karat spring area that the authors have ever studied.

该区岩溶地下水氢氧同位素关系图表明，其样点基本分布在当地雨水线左上方，存在明显的反向"氧漂移"现象，这种现象在作者所见到我国北方多数岩溶泉域岩溶地下水的同位素分布是唯一的。

User can paint some illumination on object surface directly and then find lighting configuration backwardly through our system.

使用者可以用光照笔刷直接在3D物件上著色，透过系统可以反向找出灯光的设定。

This paper attempts to decompose the load of couple into two equivalent,reversed and parallel forces.

将力偶分解为等值、反向、平行的两个力，当荷载(集中荷载、分布荷载和力偶)位置已知时，利用影响线计算梁的内力和反力，并与截面法计算结果作一比较。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。