Many planets ( for example, ganymede, mercury, the earth, jupiter and saturn ) and stars ( for example, the sun ) possess intrinsic magnetic fields. the explanation for their existence and variation remains a great challenge to planetary scientists and astrophysicists. this article attempts to review some recent developments and difficulties in the study of magnetohydrodynamics for the electrically conducting fluid interiors of planets and stars. it is the fluid motions, usually driven by thermal convection, that generate and sustain magnetic fields through magnetohydrodynamic processes in planets and stars. in planets, the magnetohydrodynamic processes are strongly affected by the combined and inseparable effects of rotation, magnetic fields and spherical geometry. the key dynamics involves the interaction between the coriolis and lorentz forces. in the sun, it is the solar tachocline, a thin shear flow layer located at the base of the convection envelope, that plays an essential role in the solar magnetohydrodynamic processes which produce the 11 - year sunspot cycle. some results of a new nonlinear three - dimensional solar dynamo model are also presented
許多行星（如木衛三，水星，地球，木星和土星）和恆星（如太
陽）
具有內部磁場.對這些磁場的存在和變化的解釋對行星科學家和天體物理學家是一個巨大的挑戰.本文試圖總結行星和恆星的導電流體內部磁流體力學研究的新近發展和困難.一般由熱對流驅動的流動通過磁流體力學過程產生並維持在行星和恆星中的磁場.在行星中磁流體力學過程強烈地受到轉動，磁場和球幾何位型的綜合影響.其動力學的關鍵方面涉及科里奧利力和洛倫茲力間的相互作用.在太
陽中其流線，即處于對流層的薄的剪切流層在太
陽的磁流體力學過程中扮演了一個基本的角色，並由之產生了11年的太
陽黑子周期.本文也給出了一個新的非線性三維太
陽發電機模型
In this sense, the affirmation of the presence of the phallus is tied to the possibility of its absence
就這個意義來說，
陽具存在的肯定與缺乏的可能性密切相關。
They only bite when you touch their private parts
除非你撫弄它的
陽具否則它們是不會咬人的
Sharks : they only bite when you touch their private parts
除非你撫弄它的
陽具否則鯊魚是不會咬人的
Sashays by itself. this dildo, looks very natural, made of clear - pink - jelly - material. there are no longer any limits for your anal and vaginal fantasies ! 17 cm long, ? ca. 3 cm
這款
陽具看起來非常真實，採用透明的粉紅色果凍材料製作，可以滿足你一切的性幻想。 17厘米長，直徑3厘米。
Barely legal school girls beautiful school girl
皮帶假
陽具女上男下325
Their tusks. also their male parts can get pretty gigantic
對，長牙，還有他們的
陽具巨大無比
S, anals, and facials. the absolute best in black in
玩
具和假
陽具女對女1250
Again and again he plunged and by now she was screaming again as he finally climaxed by pulling out and shooting his hot cum all over her burning ass cheeks
一再的抽插，當他最終達到高潮時她尖聲大叫，他拔出
陽具將滾燙的精液噴灑在她那火燒一般的屁股上。
See your manhood grow as you create the thrilling vacuum by an easy manageable one - hand pressure pump. red see - through tube with measure scale. tube 22 cm long, inside diam. approx. 6. 5 cm
這款真空增大泵會用一種非常簡單和可操控的方式讓你的
陽具增大。它有紅色的可透視的外殼和尺寸刻度。全長22厘米，內徑6 . 5厘米。
Forget freud ' s notion that dreams contain images with universal meanings ( e. g., cigar = penis ). a new generation of psychologists insists that dream symbols differ depending on the dreamer
放棄佛洛伊德的主張認為夢含括了一些影像
具有宇宙共通意義的單一解釋. （例如夢到雪茄等於夢到
陽具的解釋）新一代的心理學家強烈堅持夢的象徵其實是因人而異的
In an average day you hands will have come into indirect contact with 15 penises ( touching door handles etc
平均每一天你的手會跟15個
陽具間接接觸（經由門把等等） 。
After ejaculating, hold onto the condom and pull out gently while the penis still hard
射精后趁
陽具還挺硬時緊握安全套並小心地把它退出陰道
The textile industry is the tradition pillar industry of the siyang county, and also is the predominant industry of the siyang county
紡織服裝業是泗陽縣的傳統支柱產業，也是泗陽具有比較優勢的產業。
