layer n. 1.放置者,鋪設(shè)者,計(jì)劃者。 2.【賽馬】(一般)賭客。 3.產(chǎn)卵的雞。 4.【軍事】瞄準(zhǔn)手。 5.層;階層;地層;涂層。 6.【植物;植物學(xué)】壓條,倒伏莊稼。 7.敷設(shè)軌。 8.墊片,層板,夾層,膜。 a brick layer 砌磚者。 a mine layer 布雷艦艇。 a bad [good] layer 生蛋少[多]的雞。 a layer of rock 一層巖石。 boundary layer 邊層。 carburized layer 滲炭層。 turberlent layer 紊流附面層。 layers and backers (賽馬等的)賭客。 vt. 1.分層砌。 2.用壓條法繁殖。 vi. 莊稼倒伏。 n. -ing 分層套穿式時(shí)裝。
The research present situation and advancement of growth structure of nacreous layer are discussed 對(duì)珍珠層生長(zhǎng)結(jié)構(gòu)的研究現(xiàn)狀與發(fā)展趨勢(shì)予以了綜述和討論。
They are covered with a smooth , safe , nacreous layer to let them slip , pearllike , from our souls without real pain 他們被我們包裹在一層光滑、安全、充滿光澤的隔離膜中,仿佛珍珠一樣,他們經(jīng)歷的苦難不會(huì)讓我們的靈魂深處感受到任何真正的痛苦。 ”
In pearls , the nacreous layers are generally translucent and composed completely of aragonite , whereas layers without pearly luster are opaque and composed of aragonites and / or vaterites with their relative concentrations different in different pearls 其中具珍珠光澤的珍珠層一般呈半透明狀,均?文石組成;無珍珠光澤的不透明層有時(shí)由文石組成,有時(shí)由六方碳鈣石組成。
Surface microtopography , representation and tracing of nacreous layers of pteria penguin and blister pearl from sanya , hainan province , are studied by using interference microscope and environmental scanning electron microscope and atomic force microscope 摘要采用干涉顯微鏡、環(huán)境掃描電子顯微鏡、原子力顯微鏡對(duì)海南三亞企鵝貝及其附殼珍珠的珍珠層表面微形貌進(jìn)行了研究。
3 ) in shell of hyriopsis cumingii ( lea ) , the prismatic layers and the nacreous layers are all composed of aragonite minerals , and aragonite crystallites in prismatic layers show obviously preferential orientation of [ 012 ] axis perpendicular to the shell layers , so it is considered that the orientation of aragonite crystallites in prismatic layers perhaps play an important role in deciding the orientation of aragonite crystallites in nacre and acts as one of template to resulting the formation of aragonite with [ 012 ] orientation perpendicular to nacreous layers in nacre 3 )與海水貝殼明顯不同的是,三角帆蚌棱柱層礦物相與珍珠層一樣皆為文石相,同時(shí)查明棱柱層中文石晶體具[ 012 ]軸垂直殼層面的明顯的擇優(yōu)取向。本文認(rèn)為,三角帆蚌棱柱層中文石晶體的擇優(yōu)取向可能對(duì)珍珠層中文石晶體的擇優(yōu)取向存在模板導(dǎo)向的作用,導(dǎo)致珍珠層[ 012 ]定向的文石晶體的形成。
Main conclusions of this work are drawn as follows : 1 ) in nacre of hyriopsis cumingii ( lea ) shell , the aragonite crystallites exist two kinds of orientation , one . which is generally accepted , is the c axis of aragonite perpendicular to nacreous layers , the second , which is proposed in this paper , is the [ 012 ] axis of aragonite perpendicular to nacreous layers 本文所獲得的主要成果有: 1 )明確提出三角帆蚌珍珠層中文石晶體的擇優(yōu)取向除了存在公認(rèn)的其c軸垂直珍珠層面外,還存在其[ 012 ]軸垂直珍珠層面的新取向。