孔口

The high abundance and large colony size of Porites at shallow waters might be ultimate factors for the snail's preference, while larval phototaxis and larval preference on Porites may be proximate mechanisms.

推测微孔珊瑚在浅水区丰度高和群体大可能是造成紫口珊瑚螺对深度有不同偏好的远因，而幼生向光性和对微孔珊瑚的偏好可能是造成此现象之机制。

The parts are cast parts. In the processing, it is easier to ensure the processing accuracy of plane than the hole. So the parts' main planes are hole, two blades of the Plectrum and groove.

它的主要加工面是孔、拨叉叉口两端面和槽，在加工中由于面的加工精度要比孔的加工精度容易保证。

The parts are cast parts. In the processing, it is easierto ensure the processing accuracy of plane than the hole. So theparts' main planes are hole, two blades of the Plectrum and groove.

它的主要加工面是孔、拨叉叉口两端面和槽，在加工中由于面的加工精度要比孔的加工精度容易保证。

And in the latter process of working, it also takes hole as the poisoning base and works the two bales of Plectrum, hole, bottom plane, groove and inclined plane. In the entire machining process, it uses separately the milling machine, driller and boring machine.

在后面的工序中，均以该孔为定位基准，加工拨叉叉口两端面、孔、底平面、槽和斜平面，在整个加工过程中，分别采用了铣床、钻床和镗床。

And inthe latter process of working, it also takes hole as the poisoningbase and works the two bales of Plectrum, hole, bottom plane,groove and inclined plane. In the entire machining process, it usesseparately the milling machine, driller and boring machine.

在后面的工序中，均以该孔为定位基准，加工拨叉叉口两端面、孔、底平面、槽和斜平面，在整个加工过程中，分别采用了铣床、钻床和镗床。

Saying nothing, the man took a bottlenecked gourd, placed it on the ground, and put a coin with a square hole in the center over the top. He poured toil from a wooden ladle drop-by-drop into the gourd, without spilling a sinle drop on the coin. The man then turned to Chen Yau-tz and said,"That was also nothing. It's just a matter of practice makes perfect."Thus, the meaning of this idiom is that skill comes from repeated practice.

卖油的不说一句话，随手拿出一个葫芦放在地上，用一个方孔的铜钱盖在葫芦口上慢慢地用木杓子装满了油滴下去，只见油从钱孔中滴进去，可是铜钱上面一点儿油也没有沾上，这时卖油的才说：「我这也没甚么，只是熟能生巧罢了。

Customers may also be required in accordance with the production of shaped hole type pneumatic punching machines, such as: supporting the R PHOTOs BAG angular, triangular prism, trapezoidal, etc.

也可根据客户需要生产异形孔类气动冲孔机，如：相册袋配套之R角形、三角形、棱形、梯形等边角模、撕口模。

There was difference between differentkinds of submerged entry nozzle and no using SEN. Because columniform nozzlecan impinge deeply, so inserting it into steel liquid should be not too deep, which the bestdepth is about 100mm.

结果显示直筒型水口浇注流场与敞口浇注以及双向侧孔水口浇注的流场存在差异；直筒型水口冲击深度较深，与板坯侧孔水口相比浸入深度应较浅些，适宜深度为100mm。

The larval preference on Porites and the adult recognition of coral tissues are mechanism of host specificity.

幼生会选择微孔珊瑚以及成螺有辨识微孔珊瑚的能力是造成紫口珊瑚螺分布专一性的机制，此外成螺辨识微孔珊瑚的能力是受到珊瑚组织的影响。

Cylinder, the cylinder sets of radial a surplus deformation of the cylinder sets a great impact on the cylinder liner reduced radial a surplus amount to reduce the deformation of the cylinder sets, the top surface of the body decreases roughness, but it will increase the body on the plane cylinder only mouth the roughness ; Preload reduced cylinder head bolt deformation of the cylinder liner little effect, the body can reduce the top surface roughness and cylinder body on the plane I ended roughness; Shen appropriate reduced cylinder head bolt hole deep can reduce the deformation of the cylinder sets, but will cause the body and the top surface roughness on the cylinder body only I roughness increases Plane .

工作工况下，对于第2缸来说，气缸套径向过盈量对气缸套变形影响很大，减小气缸套径向过盈量，有利于减小气缸套的变形，减小机体顶面不平度，但会增大机体上缸套止口平面的不平度；减小缸盖螺栓预紧力对气缸套变形影响很小，可减小机体顶面不平度和机体上缸套止口平面的不平度；适当减小缸盖螺栓沉孔深可以减小气缸套的变形，但会造成机体顶面不平度和机体上缸套止口平面不平度的增大。

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％。