Now we have succeeded in generalizing the method to non-planar strips with toroidal and Klein bottle strips by taking into account the rotational symmetry of these strips.

考慮具有環(huán)形和Klein bottle邊界條件所具有的旋轉(zhuǎn)對(duì)稱性，如今我們巳成功地將這個(gè)方法進(jìn)一步推廣到這些非平面的長(zhǎng)條。

The work electricity of Bottle Light needs no external power supply. Only one empty bottle (such as a cola bottle and a mineral water bottle) is needed. Screw down the original bottle cap and screw on Bottle light. Then compress the air in the bottle repeatedly to make the piston of Bottle Light move up and down, which changes mechanical energy into electric energy and light LED. Now a brand new light of environmental protection concept is in front of us.

Bottle Light 是一種新型節(jié)能環(huán)保燈，它充分發(fā)掘了廢物再利用的巨大潛能无码黄色毛片，使人在日常生活中無形的增強(qiáng)環(huán)保意識(shí)，它的工作用電不需要任何外接電源供應(yīng)亚洲中文字幕在线四区，只需隨意拿起一個(gè)空瓶子將原有的瓶蓋擰下久久人人操人人爽，裝上 Bottle Light ，通過反復(fù)擠壓日本超刺激视频在线观看网站，壓縮瓶?jī)?nèi)空氣一级绝黄A片AAA，使 Bottle Light 的活塞上下運(yùn)動(dòng)免费99精品久久七七桃花，將機(jī)械能轉(zhuǎn)化為電能，點(diǎn)亮 LED 啪啪免费特级黄片，此時(shí)一個(gè)全新的環(huán)保概念燈展現(xiàn)在我們的面前熟女啪啪视频。

When a plane wave illuminates the bottom of axicon with ring obstacle, a bottle beam is generated within the maximum non-diffractional distance, and the beam keeps non-diffractional Bessel beam in front and at the back of the Bottle beam.

平面波入射到帶有環(huán)形障礙物的軸棱錐底面時(shí)，將在軸棱錐產(chǎn)生的最大無衍射距離內(nèi)形成Bottle beam亚洲热在线视频店，而在Bottle beam的前后仍然保持無衍射貝塞爾光九九亚洲精品自拍。

Aluminum Bottle：施 Bottle 鋁瓶

銅壺Copper Pot | 施 Bottle 鋁瓶 Aluminum Bottle | 陶瓶 Earthen Bottle

milk bottle caries/nursing bottle caries/bottle feeding caries：奶瓶齲

停止性齲:arrested caries | 奶瓶齲:milk bottle caries/nursing bottle caries/bottle feeding caries | 忽視性齲:neglected caries

A full bottle makes no sound; a bottle half full swashes. (CP)：整瓶不響,半瓶晃蕩. (漢諺)

A full belly neither fights nor flies well. (EP)腦滿腸... | A full bottle makes no sound; a bottle half full swashes. (CP) 整瓶不響,半瓶晃蕩. (漢諺) | A full bottle won't shake; a half-empty one will. (...