查询词典 pit bottom

However, if you swim in outdoor natural river, lake and sea, you must pay attention to the followings: water must be clean running water without any infectious disease; river bottom must be sand bottom without any sludge, riprap, growing float grass, submerged rock, sharp plants and fishes injuring human; zone must be one without busy transportation with smooth water flow.

经过卫生防疫部门检查合格的开放游泳池当然是比较理想的游泳场所，但如果在户外天然的江河湖海中游泳则必须注意：水必须是清洁、无传染病的活水；河底必须是无淤泥、乱石、丛生水草、暗礁、尖利植物及伤人的鱼类的沙底；水流平缓而非交通频繁地带。

The predictions are identical with that of foreign underwater acousticexperiments.The third,the scattering theory are applied in prediction of seareverberation and inversion of sea bottom parameter.Shallow-sea monstaticreverberation is predicted by combining shallow-sea normal mode theory withscattering theory.Then with simulated annealing of neural network and scatteringtheory accurate inversion of sea-bottom parameter and surface roughness are given.

第三，把散射理论应用于海洋混响的预报和海底介质参数的反演，首先通过浅海简正波理论和散射理论相结合，对浅海单程混响进行了预报；然后利用神经网络理论中的模拟退火法和散射场理论相结合，准确地反演了海底介质参数和表面粗糙度。

Bottom hem elastic adjustment - The bottom hem has elastic shock cord and can be cinched tight to keep wind out.

底部弹性调节褶边--底部弹性可调节褶边的弹力绳可拉紧不让风吹入。

The bottom hem can be cinched tight by elastic shock cord, also located beside the main zipper instead of at the bottom sides as on the PCU. They're no longer exposed and won't snag.

底部的卷边可以使用收缩绳来系得更紧一点，绳子位于住拉链的后面，而不是像PCU那样位于底部，并且绳子也不会露出来，也不会被划破。

Assuming the initial shape of a skirt to be an n-sided cylinder, the shape of its bottom edge can be modified by changing the distance between each edge and the centroid of bottom plane according to the amplitude of sine curve at corresponding angle.

所显示是一个n支持的圆筒，它的下缘形状可以被改变每个边缘和底下飞机之间矩心的距离修改根据高度正弦曲线在对应的角度。

Results show that amplitude of displacement excited by vertical incidence wave is larger than that excited by inclined incidence wave and not influenced greatly by the incidence angle. In vertical incidence, amplitudes of displacement of two points at the same altitude along each cavern are basically identical and maximum relative displacement occurs between top and bottom point of the cavern. While in the case of inclined incidence, displacement amplitude on sides meeting the wave is larger than that on leed sides, and maximum relative displacement occurs on left skewback and bottom of the cavern.

结果表明，位移幅值受入射角度的影响不敏感，竖直入射比斜入射情况要大；竖直入射时，各洞室两侧同一高程处的位移幅值基本相同，相对位移差最大部位为洞顶与洞底，而斜入射时迎波面比背波面一侧位移大，且相对位移差最大部位为洞室迎波面的左拱座与洞底。

If you follow what I've tried to explain, the weight will sit on the bottom with the skipjack about 3" or 4" above the bottom.

如果你搞明白了的话继续，鱼饵" skipjack "在离底8-10厘米拖动。

General requirements at the bottom of the handing of resin Edition font on the slide Lee, should not be sticky, but there is not enough because of the exposure of radiofrequent-stick at the bottom of the font soft state, it's easy to adhereto inks, ink accumulated and dry up in light-weight.

凡是给求树脂版字体底部手感上有滑利不收觉，不答不收粘，但由于曝光不敷，字体底部呈粘软状况，很便当粘住油不朱，油不朱越积越众并潮燥在细线本质。

If leather sandal sole is accumulated have mud, should brush bottom of; copy skin or balata bottom to dip in with the brush with dry brush bath is clean.

皮凉鞋鞋底如积有污泥，要用干刷子刷；仿皮底或橡胶底则用刷子蘸水洗净。

In the light of structure and operation behavior of oil tank, an overall investigation on the bottom plate corrosion of oil tank is made. The paper analyses the corrosion mechanism of bottom plate of oil tank located in pumping station, puts forward some protection measures including improving the technology design of oil tank, applying available steel material and utilize the CP technology.

针对原油罐的构造和运行特点，对罐底板腐蚀的情况进行了全面调查，分析了输油站内原油罐底板的腐蚀机理，提出了改进油罐工艺设计、选用合适的材料以及利用阴极极化原理的阴极保护等多项防护措施。

The small blue capacitor has very high chances to go fully shorted compare to electrolytic capacitor which is very rare.

小蓝电容器具有很高的机会去充分地缩短了比较电解电容器，这是非常罕见的。

In the Italian campaigns of 1513 and 1515, when the Swiss won the victories of Novara and Marignan, he acted as army chaplain.

在意大利的运动， 1513年和1515年，当瑞士赢得了胜利，诺瓦拉和marignan ，他担任军队的牧师。