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Bizarre patterns of river phytoplankton on the shore of a lake.
Top view of a scale model of a blue retro truck with a load of long logs.
Scale model of a retro truck with a blue cabin and loaded with timber. Top view.
A large, snow-white bush of flowering hawthorn on a hill above the river.
白山楂花是制作藥用酊劑的原料
Abundant white blossom of white hawthorn.
Branches with snow-white wild hawthorn blossoms.
A wonderful texture of snow-white flowering branches of wild hawthorn.
Hawthorn flowers are a raw material for the production of natural sedative medicines.
A flowering branch of wild hawthorn, which is used in homeopathy.
白色山楂花在傳統醫(yī)學中用于制作鎮(zhèn)靜酊劑
A glass jar with an aqueous solution of a red organic dye on a background of other organic dyes.
在燒杯中的酚酞指示劑染料溶液呈深粉色。
復古合金輪轂 16 半徑適用于寶馬 E28 修復和銀金噴漆后
Roasted organic coffee beans from Tanzania in a round vessel on the background of organic molecules of substances contained in coffee.
When the Congo red indicator dye interacts with oxalic acid, small insoluble blue particles forming.
A classical acoustic guitar near a green country fence and a blooming jasmine bush.
化學燒杯底部沉淀著棕色的硫化錳
四月野生梨花飄香
A blooming branch of wild pear with fragrant white flowers near a lake.
Fragrant white flowers of wild pear with insect pests.
A branch with abundant white wild pear flowers near a lake.
湖邊野生梨花樹的長枝
湖邊山上一棵野生梨樹的繁茂花枝
Purple forest flowers of corydalis have medicinal anti-cancer properties.
Early forest flowers of Corydalis purpurea are the raw material for the production of medicinal extracts.
The first forest flowers of Corydalis purpurea are medicinal herbs.
The first forest flowers of Corydalis purpurea are raw materials for the production of natural medicines.
The forest purple flowers of the Corydalis have medicinal properties.
The first forest flowers of Corydalis purpurea have medicinal properties.
The first spring flowers of Corydalis purpurea contain natural healing substances.
The purple flowers of the forest Corydalis have unique healing properties.
The forest flowers of purple corydalis are used as medicinal herbs.
Abundantly blooming plum branch against the background of evening sunlight.
A blooming plum branch with delicate white flowers against a background of evening sunlight.
A lush branch with white wild cherry flowers on a lake background.
Large white flowers of a blooming wild cherry tree.
The delicate white blossom of a wild fragrant cherry.
Fragrant white wild cherry flowers on a sunny April day.
Abundant branch of blooming wild cherry against the background of a lake.
一個裝有飽和硫酸錳溶液的燒杯。鹽結晶過程在燒杯底部和內表面開始。
a small branch of blooming wild cherry on a soft gray background.
A blooming branch of wild cherry grows upwards, against a soft gray background of water.
The upper blooming branch of wild cherry against the background of the lake.
A small blooming branch of wild cherry on a grayish background of water.
A lush blooming branch of wild cherry on a gray lake background.
Large white wild cherry flowers on a soft gray water background.
A long branch with white wild pear flowers above the surface of the lake.
A long branch with white wild pear flowers over calm water.
A thin branch of a flowering wild pear tree above the choppy surface of the water.
A branch of wild pear blossoms above the clear water of a lake on a bright spring day.
開花的野生梨樹的一個樹枝以池塘為背景
Flowering branches of wild pear over calm water.
A long flowering branch of wild pear against a backdrop of calm water.
一顆成熟的大豆莢已準備好收獲
Fragrant white cherry blossoms on a warm spring evening.
A blooming branch of garden cherry in the evening.
Beautiful white plum blossoms in the evening.
A lush branch of a blooming plum tree against the backdrop of an orange evening sky.
Garden plum blossom against the background of the spring evening sky.
A small branch of blooming plum against the background of the evening orange sky.
Fragrant plum blossom against the background of the spring evening sky.
A lush branch of blooming plum against the background of an orange sky.
White abundant apricot flowers on a blurred background.
Gorgeous white apricot blossoms against a bright spring sky.
The surface of the clean and transparent Aegean Sea.
Mini portable speaker on a purple background.
Lovely young girl student in jeans, straightens her chic blond hair with her hand, sitting on the green grass near the university.
A chic, charming young blonde girl, a student, dressed in a jeans, sits in a green grass and looks thoughtfully to the side.
A very attractive blonde, wonderful girl is sitting on the green grass near the university in a bad mood.
A very cute young blonde girl student, dressed in jeans, sits on the green grass and looks thoughtfully to the side.
Crystalline substances of different structure: calcium nitrate and magnesium nitrate in two glass jars. Substances are effective nitrogen fertilizers in horticulture.
250 毫升燒杯中紅色液溴的形成
Test tubes with green, blue and yellow liquids.
Effective oxidizer in pyrotechnics: sodium nitrate, in a glass jar with the formula.
在燒杯中的水溶液中錳硫酸鹽晶體生長。
玻璃管中的白色無機試劑：碳酸鈉、碳酸鉀、硅酸鈉、硫代硫酸鈉、硫酸鈉和硫酸鋇在木桌上。
Young green clover in soft backlight sunlight.
Sunlight reflects off the water surface and illuminates the young greenery.
Young greenery in the backlight of sunlight reflecting off the water surface.
Spring greenery in soft backlighting sunlight.
Young spring clover in soft sunlight reflecting off the surface of the water.
An acoustic classical guitar of the correct shape next to a blooming jasmine bush.
無機化學。試管中的彩色無機鹽：高錳酸鈉、重鉻酸鉀、硫酸銅、氯化鎳、硫酸鈷。
Fine particles of aluminum on the surface of the water in a ceramic mortar with pestle.
藍色和綠色的染料晶體落入燒杯底部并慢慢染了水溶液
The process of growing potassium nitrate crystals, the crystals are in the form of hexagonal needles.
Ripe corn in the sunlight. Seeds have a beautiful coloring.
A shiny new chrome-nickel exhaust valve and an old intake valve.
New exhaust valve with bronze guide sleeve and old intake valve.
管中的綠色沉淀，管底部是硅酸銅藍色沉淀。
深色玻璃瓶中的有機溶劑：苯、對二甲苯、甲苯
硅酸銅藍色沉淀形成的化學反應
An acoustic guitar with a thin neck next to a blooming jasmine bush.
White jasmine flowers next to the metal strings of a classical guitar.
White jasmine flowers near the metal strings of a classical guitar.
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