凸的

Of if is concave up on one side of and concave down on the other side.

点，如果在点的一侧是凹的，而在的另一侧是凸的。

By weakening the premise of the convexity of the objective function required in paper[7], we prove the sufficient desent property and the global convergence with the strong Wolfe line search.

在第二章中，我们参照文献[7]中的方法，提出了一类与HS算法相关的共轭梯度算法，并减弱了文[7]中要求目标函数二阶连续可微且为凸的前提条件，采用强Wolfe线搜索，在较弱的条件下证明了这一类算法具有充分下降性和全局收敛性。

The skull is dolichocranic (cranial index 73.8) rather than brachycranic, the face narrow and prognathous rather than broad and flat.

其头骨有较之圆头型更长的颅形（颅骨指数73.8），以及比宽扁脸型的更窄的面部和更前凸的下巴。

The guns were captured in the attack on the Taku Forts at the mouth of the Yung-Tin-Ho River,guarding the river route to Peking.

炮口的那一面非常宽（相对於它的口径，这个炮是相当的大）而且有一点外凸的。

A class of modified BFGS algorithm which satisfies the new quasi-Newton equation is proposed in the paper[1],and the global convergence of the algorithm is proved under the condition that the objective function is uniformly convex.

文献[1]曾在已建立的一类新拟牛顿方程 Bk+1sk=yk-=yk+kγskTsksk的基础上，证明了满足新拟牛顿方程的一类改进BFGS算法在目标函数为一致凸的条件下，具有全局收敛性。

Sessile spikelet flat, convex or concave across back; lower glume lanceolate to ovate, membranous to leathery, smooth, marginally 2-keeled or rounded; upper glume boat-shaped; lower floret male or barren, with or without palea; upper floret bisexual, with entire awnless lemma.

无梗小穗平，凸的或凹的直径背面；更下部的颖片披针形到卵形，膜质到革质，清除，稍微龙骨状或圆形；上面颖片舟状；更低的小花男性或者不孕，有或没有内稃；上面小花两性，具全缘外稃。

Fig3-5 Profound Class II division1 protrusion of the maxillary incisors leads to condylar pressure against the articular eminences , as the mandible unsuccessfully seeks incisal contact in excusive movements.

图3-5很深的二级一类上颚门齿的前突，当下颚离心运动时无法成功的寻找门齿接触时，会导致髁头在关节隆凸的压迫。

When I see narrow forehead and protruding lips of Peking ape man in museum, I feel dejected for hominid's roughness in remote antiquity.

当我在博物馆里看到北京猿人窄小的额和前凸的吻时，我为人类原始时期的粗糙而黯然。

Culm sheaths faintly red-brown or yellow-brown, usually alternating with pale and deep colored stripes, with denser purple-brown spots especially distally, glabrous, distal margins usually straw-colored; auricles and oral setae absent; ligule brown, arcuate, sometimes slightly convex at middle, ciliolate; blade reflexed, abaxially pale purple-brown, adaxially green, lanceolate to linear-lanceolate, flat.

竿箨微弱红棕色或黄色棕色，叶耳和口头的刚毛无；叶舌棕色，弧曲，有时有点凸的在中部，具短缘毛；反折的叶片，背面浅紫色棕色，绿色，披针形到线状披针形，公寓。

Contours may be convex, concave, or self-intersecting.

周线可以是凸的、凹的或是自相交的。

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％。