凹形

Experiments are carried out for two types unusual eddying tube fuel perheater,and the results show the total heat transfer coefficient is 1.2～1.262 times and friction factor is 2.8～9.0 percent higher than that of smooth tubes with the same size.

对研制的两种不同结构形式的异形凹槽旋流管式燃油预热器进行了试验研究，结果表明研制的燃油预热器总传热系数要比相同尺寸光滑管式预热器提高20％～26.2％，而油侧压降仅增大2.8％～9.0％。

Lower glume of sessile spikelet lanceolate or elliptic, strongly 6- or 7-veined with deep grooves between.

披针形的更下部的颖片的无梗小穗或椭圆形，强烈6或7脉具深具凹槽在之间。

With a comma-shaped mark on the underside of each hind wing .

一种翼前有凹痕的蛱蝶科蝴蝶，其后翅的下侧有逗点形斑点。

Anglewing butterfly with a comma-shaped mark on the underside of each hind wing .

一种翼前有凹痕的蛱蝶科蝴蝶，其后翅的下侧有逗点形斑点。

Based on the analysis of the structure characteristics of the plastic product with inner concave loop slot and the mold design projects,an injection mold for this kind of part was designed.

在分析环槽形内侧凹塑件结构特点及模具设计方案的基础上，设计了此类塑件的注射模。

The Indians cut notches on a stick to keep count 9 of numbers.

印第安人在棒上刻v形凹痕用 n 来计数。7

The leaf is large, intimate circle, part is born cauline top, palm state divides mid, lobation is linear wrap around needle form, gradually pointed, topmost 2 crack, two side provide petiole dentate spinule, halberd dash forward apparent, spadix armpit is unripe, bigger, individual plant of different of male and female, female flower is big, globose, helix shape is worn be born on spicule axis; Male flower is small, yellow, move unripe Yu Xiaobao piece in sunken acupuncture point, fructification is close globose, diametical 10-20 centimeter, black Brown, exocarp is smooth, mesocarp is thicker, fiber is qualitative, endocarp is by 1-3 hard osseous divides pit composition.

叶大型，近圆形，集生茎顶，掌状分裂到中部，裂片线状披针形，渐尖，顶端2裂，叶柄两侧具齿状小刺，戟突明显，肉穗花序腋生，较大，雌雄异株，雌花大，球形，螺旋状着生于小穗轴上；雄花小，黄色，着生于小苞片的凹穴里，果实近球形，直径10-20厘米，黑褐色，外果皮光滑，中果皮较厚，纤维质，内果皮则是由1-3枚硬骨质的分果核组成。

Foliaceous profound change is simple, shape pouring egg grows a circle, or wrap around needle form; Arteries and veins of exterior midrib, side and net arteries and veins fall greatly sunken and show wave state thick lines, young when body of the gland that be mixed by maize wool, the nervation below is protuberant, close by the fallow thick hair that comprises to astral shape wool by bunch shape wool by, constitute the adornment pattern with one luxuriant leaf, accordingly " annals of picture of plant of high mountain eyebrow " make knit Xie Dujuan again.

叶厚革质，倒卵状长圆形，或倒披针形；表面的中脉。侧脉和网脉深下凹而呈波状粗皱纹，幼时被黄色毛和腺体，下面的叶脉突起，密被由簇状毛至星状毛组成的淡棕色厚毛被，构成一叶华丽的装饰图案，因此《峨眉植物图志》又叫皱叶杜鹃。

Leaves with petiole 25-45 cm or longer, axis slightly flat, grooved adaxially, glabrous or pilosulose; leaflets 5-8 pairs, usually subopposite; petiolule ca. 5 mm; blades adaxially shiny, narrowly elliptic-lanceolate or slightly falcate, 7-15 × 2-5 cm, thinly papery, abaxially glabrous or pilosulose, lateral veins 15-17 pairs, nearly parallel, dense, slender, base cuneate, slightly asymmetrical, apex acute or shortly acuminate. Inflorescences terminal, conical.

叶具叶柄25-45厘米或更长，轴稍平，正面具凹槽，无毛或具小柔毛；小叶5-8 对，通常；小叶柄约5毫米；叶片正面发亮，狭椭圆形披针形或者稍镰刀形， 7-15 * 2-5 厘米，薄纸质，背面无毛或具小柔毛，花序顶生，圆锥状。

Pistillate flowers: calyx as in staminate flowers, persistent; corolla 4- or 5-lobed, base tubular and often inflated; reduced stamens absent; ovary sessile or with short pedicel, 1-loculed; ovules 2, pendulous from apex; stigma thick, peltate, apex concave, sometimes slightly oblique.

雌花： 花萼与雄花的相同，宿存；花冠4或5裂，基部管状和经常膨大；退化的雄蕊无；子房无梗或具短花梗，1室；胚珠2，从先端下垂；柱头粗，盾形的，凹的先端，有时稍的偏斜的。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。