about adv. 1.大約,差不多;前后,左右。 About a mile 大約一英里。 That's about right. 大致不差。 That's about (the size of) it. 就是那么一回事;大概如此。 It is about finished 差不多要完成[終結(jié)]。 2.周圍,四面;到處。 Look about 四顧。 3.活動(dòng);盛行,到處散布,傳布。 The news is going about. 消息正在傳開。 4.繞著,圍著,倒轉(zhuǎn),掉轉(zhuǎn)。 Round about 掉轉(zhuǎn),回頭,倒過來。 Face about (使)轉(zhuǎn)過來。 Put the ship about 把船倒過頭來。 The wrong way about 相反,倒轉(zhuǎn)過來。 5.附近;〔古語〕周圍。 Is the manager about 經(jīng)理在嗎? There is no one about. 附近無人。 A mile about 周圍一英里。 6.〔接帶 to 的不定式〕將要。 1.在…周圍。 About the neck 繞著脖子,圍在頸上。 2.在…附近,在…身邊,手頭。 Somewhere about here 在此地附近。 I have no money about me. 我身邊無錢。 3.前后,左右;大概。 About noon 正午前后。 4.對(duì)于,關(guān)于。 Talk about sb. 談?wù)撃橙恕?He is most particular about being conscientious. 他最講究認(rèn)真。 5.從事于。 What are you about 你在干什么? adj.〔用作表語〕傳播,流行。 Rumour is about. 謠言紛紛。 About and about 〔美俚〕差不多,大致相同。 (Right) about face 〔美國〕向后轉(zhuǎn)! About turn 〔英國〕向后轉(zhuǎn)。 Be about 1. 起來;活動(dòng);動(dòng)手,做事 (Butterflies are about early this year. 今年蝴蝶活動(dòng)得早。 He is not yet (up and) about . 他還沒有起來,還未動(dòng)手。 Mind what you are about! 當(dāng)心!注意!)2.散布,傳播,流行。Be about to 準(zhǔn)備,將要,正打算 (He is about to speak. 他正打算說話)。 Go about 1. 正要,將要。 2. 使(船)掉頭。 Go a long way about 繞很多路。 Much about 幾乎。 Out and about 從事日常工作,(病后等)起來做事。 Set about 動(dòng)手,著手。 Take turns about 輪流。 Turn and turn about 交互。
Handle is not symmetrical about stem centerline . dimension shown represents the longest operational radius 手柄并不是關(guān)于中心線對(duì)稱。表中的尺寸表示最大操作半徑。
An integral property and its physical significance of difinite integral, double & triple integral, curve and curved surface integral of generalized odd and even functions are demonstrated, which are symmetrical about plane, line and point in the domain 論述了關(guān)于面、線、點(diǎn)對(duì)稱的區(qū)域上的廣義奇、偶函數(shù)的定積分、二重、三重積分、曲線、曲面積分的一個(gè)性質(zhì)及其物理意義。
The distribution of streak width along the lateral direction shows that the width attains its maximum value at the central line and becomes narrower toward the side wall, and its distribution is symmetrical about the central line of the flume 低速帶寬度在水槽中心位置最大,往兩邊的邊壁逐漸減小,而且在橫向上相對(duì)于水槽中心線對(duì)稱分布。低速帶間距與寬度的比值約為20。