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It is sometimes difficult to draw the line separating ferromagnetic from paramagnetic substances.是什么意思？

It is sometimes difficult to draw the line separating ferromagnetic from paramagnetic substances.

嚴格區別鐵磁性與順磁性物質有時是很困難的.

it

pron. 它，他，正好是所需的，事實[情況]；n. <美俚>傻瓜，笨蛋，<俚>絕妙的人，理想的東西，登峰造極；

is

vt.& vi. 是（be的三單形式；n. 存在；

sometimes

adv. 有時，間或，時

difficult

adj. 困難的，難做的，難解的，不易相處的；

to

prep. 向，朝著，到，關于，屬于；adv. 朝一個方向的，到某種狀態，關閉；

draw

vt.& vi. 繪畫，拖，拉，招致，吸引；vt. 畫，拉，吸引；vi. 移動，拔出劍，皺縮，汲取；n. 平局，抽獎；

the

art. 指已提到的人（物），指說話人與聽者已知的人（物），用于獨一無二的事物前，與形容詞最高級和序數詞連用；

line

n. 線條，排，行列，界線；vt. 排隊，用線標出，沿…排列成行，給…安襯

separating

adj. 分開[離，裂]的；v. 分開( separate的現在分詞 )，（使）分離，區分，隔開；

ferromagnetic

adj. 鐵磁的，鐵磁體的；

from

prep. （表示時間）從…，（表示原因）因為，（表示來源）來自…，（表示分離）與…分離[隔開]；

substances

n. 物質( substance的名詞復數 )，實質，物體，[哲學]1)。本質；

...the spiralling vortex airflow that slows the plane.
使飛機減速的螺旋形氣流渦旋

You just go on ahead. I'll come by later...
你只管先往前走。我隨后就來。

He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打兒子的,是恨惡他;疼愛兒子的, 趁早管教.

For further information, please contact 414 3925, extension 2253.
詳情請致電414 3925,轉分機2253。

He sat there while I made the case for his dismissal...
他坐在那兒，聽我陳述解雇他的理由。

Baroness Thatcher's claims seem credible to many.
撒切爾女男爵的主張在很多人看來是可信的。

Nothing to be got without pains but poverty.
一份耕耘，一份收獲。

This decree obliges unions to delay strikes.
該法令迫使工會推遲罷工。

The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索權當有支付義務的第一方不能支付時，可以向商業票據的背書人要求支付的權力。

Ferns grow in shady and moist places.
羊齒類植物生長在陰暗潮濕的地方.

The ferrofluid can be magnetized to the saturated state in presence of an external magnetic field.
磁流體在外加磁場的作用下能夠被磁化到飽和狀態.

Guimeng , electric, chromium manganese, ferro - alloys such as ferromanganese products.
硅錳、硅鐵、鉻錳、錳鐵等鐵合金產品.

OBJECTIVE To study the dissolution rate of fenoprofen calcium tablets and establish the quality control standard.
目的研究非諾洛芬鈣片溶出度的方法學,為藥品質量控制制定新的標準.

The ferriage of the river is neglected.
此河的渡船已無人過問.

Ferroalloy and Products, Springs and Coils, Cold, Hot, Galvanised Sheets and Coils.
采購產品鐵合金和產品,玻璃纖維制品, 彈簧和線圈, 寒冷, 熱地, 電熱毯和卷.

Clarity is crucial to persuading our fellowman of the moral superiority of personal liberty.
清晰對于說服我們那些以道德至上來詮釋個人自由的同胞至關重要.

Villagers use bamboo splits to build fense.
村民們用竹條修建籬笆.

A unit of length equal to one femtometer ( 10 - 15 meter ).
費米長度單位,等于一毫微微米 ( 10 - 15米 )

The boy was frail and never ganged with his fellows at school.
這個男孩身體虛弱,從不和同學們一起玩.

Chemicals Stocks, Ferroalloy and Products, PVC Resins, Plastic Raw Material, Chemical Supplies.
采購產品股票, 鐵合金和產品, PVC樹脂, 塑膠原料, 化學用品.

"You're a funny feller," Fairbairn said grumpily.
“你是個不可理喻的家伙。”費爾貝恩氣沖沖地說。

The effect of fenofibrate on amputation risk was independent of dyslipidemia and glycemic control.
非諾貝特對于截肢風險的作用獨立于血脂紊亂及高血糖的控制.